Solutions for air humidi˜cation and evaporative cooling · 2019. 6. 12. · CAREL solutions for air humidification are simple use and installation, and reliability to ensure continuous

Solutions for air humidi�cation and evaporative cooling

Control Solutions and Humidification Systemsfor HVAC/R

high efficiency solutions

Can protecting the environment be reconciled with our industrialised society? Yes, today this is possible. Indeed, this is the concept of sustainable development: improving the quality of the life, without overloading the supporting ecosystems that it depends on, now made possible by progresses in technology.While until recently sustainable development was simply a desire, a cost and an obligation defined by legislators so as to bequeath a healthy planet to future generations, today it is the only plausible choice. Changing public awareness continues to focus on the more worthy companies, rewarding these with higher sales. A need has thus become an opportunity, a chance not to be missed to unite the need to develop products and services that save energy with the possibility to effectively reduce environmental impact.

To encourage sustainable development, many activities are underway as concerns both the environmental policies of individual nations and international organisations (above all the European Union), and specific research and development work.

Today, then, solutions to combat global warming and pollution, to live a sustainable existence, to make our cities more liveable and our factories more efficient and virtuous all exist: the technology is here.

CAREL has always developed and promoted evolved control systems, proposing innovative solutions in the HVAC/R sector. These are our “high efficiency solutions”, a clear response for environmental protection through optimised and integrated control systems, capable of bringing significant energy savings and consequently reducing environmental impact.These are new solutions for the market, yet the choices made are still in line with our tradition: we have always invested in R&D, right since we first started business, and we continued to do so despite the global recession.

These cutting-edge control solutions are now available, and their full potential is ready to be exploited, to achieve an effective competitive advantage on the world scene and be rewarded by the market.Using CAREL “high efficiency solutions” today means doing something concrete to contribute to protecting the environment. It means looking to the future with confidence.

control energy consumption

respect for the environment

Humidify... ...cool while savingHumidification for comfort and industrial processesAir humidity is an important parameter for personal comfort in residential and commercial environments; the right level of air humidity guarantees a sense of well-being and productivity in the workplace. In industrial processes, air humidity control is needed to ensure process stability, product quality and quite often compliance with standards in force. CAREL products respond to the needs of residential, commercial and industrial applications, with special focus on running costs and energy consumption. Other important features of CAREL solutions for air humidification are simple use and installation, and reliability to ensure continuous service.

Energy savings: evaporative coolingAir can be effectively cooled by exploiting the evaporation of water atomised into very fine droplets: the change in state, from liquid to vapour, absorbs energy from the air, which is consequently cooled. Evaporation of 100 kg/h of water absorbs 69 kW of heat from the air, for power consumption of less than 1 kW!. In an air handling unit, the supply air can be evaporatively cooled and humidified (direct evaporative cooling, DEC). Alternatively, if the outside air humidity is already high, the exhaust air can be cooled by several degrees without limits in terms of humidity, as it is discharged by the AHU; this cooling capacity, using a heat exchanger, can be used to cool the incoming fresh air with an efficiency that depends on the heat recovery unit used, yet easily exceeds 50%! (indirect evaporative cooling, IEC). All this means lower unit energy consumption and smaller dimensions and capacity of the cooling coil and chiller.To develop these sophisticated solutions, CAREL has fitted a complete and modern air handling unit in its research centre, to optimise performance in all operating conditions and hence offer customers solutions that are together efficient, complete and easy to use.

With our innovative

solutions, we can guarantee

considerable energy savings

for cooling air in AHUs.

Applications 7offi ces 9

industry and process 13

datacenters - evaporative humidifi cation and cooling 17

hospitals and operating theatres 21

steam bath 25

Isothermal humidifi cation 29Immersed electrode humidifi ers 31

Heater humidifi ers 39

Gas-fi red humidifi ers 43

Centralised steam distributors 47

Accessories 51

Adiabatic humidifi cation 53Pressurised water humidifi ers 55

Compressed air and water atomisers 61

Ultrasound humidifi ers 65

Centrifugal humidifi ers 69

Evaporative cooling 73Atomisers - evaporative cooling 75

Water treatment systems 83Water treatment 85

Sensors and protection devices 89Sensors and protection devices 91

Applications

9

The right level of humidity in rooms affects the level of comfort perceived by people and reduces the risk of respiratory illnesses. Humidification is generally required during the winter period, as heating systems “dry” the air, causing dry throat, chapped skin and lips and sore eyes.

Comfort depends on the relative humidity: in winter, even if there is fog outside (100% relative humidity), the building heating systems increase the temperature of the air to a comfortable level, around 20 °C. In this way, the relative humidity decreases to values even as low as 10-30%, which are perceived as dry air. Consequently the skin on the hands cracks and the same occurs on the lips. As well as being an unpleasant sensation, the nose and throat are “dry”, thus favouring the typical illnesses of the winter period.

The best comfort level is obtained when humidity is controlled and maintained between values of 40 and 60% relative humidity. For this reason the humidification system is made up

of a humidity generator with controller connected to at least one room air humidity probe.

The dry air in the winter increases dust present in the air deriving from carpets and curtains and particles of skin that people lose. This causes problems for people with allergies or asthma, which can be reduced by a correct level of humidity in the air.

If you consider the effect of low humidity on objects, there are many examples. Low humidity causes breakage and cracks in wooden, paper and textile objects. Objects such as books, paintings on wood, canvas and paper, valuable wooden furniture can be badly preserved or even damaged by low relative humidity. Moreover, cracks may appear in parquet.

Low humidity affects the temperature perceived. In summer, perspiration cools the skin and makes the temperature perceived lower than it actually is. In heated environments during the winter months, dry air favours the evaporation of

water from the skin and therefore a lower temperature is perceived; consequently the thermostat is increased by 1-2°C in order to obtain a comfortable temperature.

Comfort and production

thanks to excellent humidity.

Well-being, health and office

objects are protected.

offices

humiFog“Pressurised water humidifiers” p. 55

humiSteam“Immersed electrode humidifiers” p. 31

compactSteam“Immersed electrode

humidifiers” p. 31

humiSonic“Ultrasound humidifiers” p. 65

offices

Humidifier hygieneHumidification systems must contribute to the comfort of environments by only introducing hygienically safe moisture into the air. For this reason, isothermal humidifiers are available, which produce steam internally via the boiling of water, thus obtaining intrinsic hygienic safety. Adiabatic humidifiers obtain a very high hygiene level by using demineralised water, compatible materials (stainless steel, quality plastics used for food-stuffs) and operations such as automatic

Maximum comfort with steam humidificationSteam generator humidifiers use an external energy source, electricity or gas, to take water to boiling point, thus producing steam. The choice of the type of energy depends on availability, cost and the investment necessary. The humidifier can use mains water; a solution that minimises the cost of the system but which requires periodical maintenance in order to remove the mineral salts that accumulate or, more simply, to replace the cylinders (humidifiers with electrode technology). Alternatively, demineralised water is used (except for electrode technology) so as to minimise system shutdown periods and maintenance costs. The steam produced by boiling is easily injected inside the air handling unit, requiring a small space for complete absorption. The space required can be reduced using latest generation products such as the ultimateSAM, fitted with nozzles that evenly distribute “dry” steam only. Alternatively, humidification can be applied directly in the environment with steam distributors fitted with fans, a simple method often used in existing systems, even in residential environments, with products such as compactSteam.

Comfort and energy saving with adiabatic humidifiersAdiabatic humidifiers atomise (spray) very fine droplets of water, which are absorbed naturally by the air. Not producing steam, their characteristic principle is very low power consumption compared to “steam” humidifiers. These can also be used in the summer to cool the air: to give an example, using 1 kW of electricity it is possible to atomise up to 100 l/h into very small droplets that “absorb” 70 kW of heat from the air. These evaporative cooling systems are increasingly used in air handling units in order to cool with very low electrical energy consumption, with technical solutions used for dry and wet climates. Adiabatic humidifiers are also available for applications in fan coils (with ultrasound technology), on the wall or in false ceilings, representing a flexible solution also in existing installations.

Humidification system control The control of the humidification systems and evaporative cooling systems is of fundamental importance. Using humidity and temperature probes, the integrated controller adjusts the capacity of the humidifier to reach the humidity set-point, without exceeding with humidification in AHU (humidity limit probe), in proportion to the flow of air handled (proportional signs), only when ventilation is running ( flow switch inlet) and with temperature limits /temperature limit probe). The humidifiers must be easy to integrate into air-conditioning unit and AHU control systems, in a way to contribute with the optimisation of system performance. Connectivity and availability of communication protocols acquire increasingly more importance.

periodical washing cycles. Thanks to all this, hygienically safe “humidity” is generated without the need to use very expensive and pollutant biocide additives, as attested by the certification obtained with respect to the VDI6022 standard “Hygienic standards for ventilation and air conditioning systems, offices and assembly rooms” .

13

What is humidity?Humidity is nothing more than airborne water vapour. Relative humidity is the percentage of water in the air at any given temperature (e.g. 50% RH at 20 °C) with respect to the maximum quantity that the air can hold at that temperature (100% RH at 20°C). The need to humidify the air usually occurs in winter months, when the outside air is cold and humid, for instance -5°C, 90% RH, and is heated in industrial environments at 20°C with a relative humidity that is lowered to 15% RH. As a result, the air can seem “dry”. Even an air-conditioning system or a refrigeration system can “dry” the air, in that they work by cooling the air until it is below dew point, removing humidity (dehumidification). In both cases, where the result is dry air, a phenomenon occurs whereby a balance is created between air humidity and the objects within that environment, which tend to lose moisture content to evaporation.There are well-known effects on materials: • dimensional and qualitative variations

on hydroscopic materials made of plant fibres such as paper, fabric, wood, etc.;

• weight loss and aesthetic deterioration

industry and process

of fresh produce such as fruits and vegetables stored or displayed on counters;

• the presence of static electricity results in occurrences of discharges and electrostatic attachment;

• decrease of physical well-being and comfort of personnel, drying of the body’s respiratory tracts that increases vulnerability to typical seasonal wintertime illnesses.

Adiabatic humidifiers atomise water into very fine particles that spontaneously evaporate into the air absorbing heat and thereby cooling the air. In factories that produce a lot of heat, such as steel mills, an adiabatic cooling system increases the comfort of workers and therefore their level of concentration, lowering the rate of errors and raising productivity.

Humidifying systems must contribute to a healthy environment by introducing only hygienically safe moisture into the air. For this purpose, there are steam and adiabatic humidifiers available that use materials and devices to produce “humidity” safe enough as to obtain certificates such as the well-

known VDI6022 “Hygienic standards for ventilation and air-conditioning systems, offices and assembly rooms”.

Productivity, quality and

energy savings in production

and storage processes thanks

to humidity control.

An increasingly important

standard in industrial

production.

Ventilated distributors“Pressurised water humidifiers” p. 55

humiFog multizone“Pressurised water humidifiers” p. 55

WTS“Water treatment” p. 85


compactSteam“Immersed electrode humidifiers” p. 31

ChillBooster“Atomisers - evaporative cooling” p. 75

humiDisk“Centrifugal humidifiers” p. 69

mc multizone“Compressed air and water atomisers” p. 61

optiMist“Atomisers - evaporative cooling” p. 75

industry and process

Quality and productivity for the printing industryPaper is made from plant fibres (cellulose) and is a hydroscopic material: during the cold season, because the heat generated by machinery and by the heating system dries the air, the moisture content in paper decreases, producing changes in the size and in the technical characteristics of the paper. The length of a sheet of paper varies between 0.1 and 0.2% if the humidity varies in a 10% RH range: in a standard 16 page sheet in A4 format the change can be upwards of 2 mm! In ideal conditions, for paper storage and printing, relative humidity should be maintained between 50% and 60%.

A humidity control system:• reduces printing misalignments due to

dimensional changes in the paper;• limits breaks and tears of the paper

during automatic feed;• avoids undulation and wrinkling;• minimises electrostatic discharges and

electrostatic attachment;• optimises ink absorption.

Humidifying and Energy savingsThe printing industry uses notable levels of humidification because the processing and storage plants are large, and often have high loads to manage. Adiabatic humidification is an excellent solution to obtain a correct and stable level of air humidity and to absorb sensible heat generated by process machinery. For instance, 100 kg/h of atomised water absorbs approximately 70 kW of heat while consuming only 1 kW of electricity: an advantageous humidifying system that uses a renewable resource: water.

A solution for every applicationHumidification in the printing industry is obtained with electric or gas-fired steam generators, which move the air flow into the air handling unit or directly into the factory with blowers located inside the processing space. Adiabatic humidification and evaporative cooling are obtained by installing a rack with nozzles inside the air handling unit, with nozzles distributed in the area being air-conditioned, often located around the printing machinery where the need for humidification is at its highest. For small plants there are centrifugal adiabatic wall humidifiers available that are easy to install.

Humidification and evaporative coolingThese have remarkable advantages in many industrial applications in terms of product quality, productivity, energy savings and operating costs.

Cold rooms, food industry Humidification systems compensate for the humidity that is condensed in refrigerating system evaporators; if this did not happen, the air would dry out rapidly causing a deterioration of the products and loss in weight.

Tobacco industry Dry air causes the tobacco leaves to shrink with a consequent loss in weight and increase in fragility. This leads to cracks in the leaves that are used to produce tobacco, cigars, cigarettes and causes obstructions during the paper feed into the machinery.

Ageing of wineWine producers have always incurred significant losses in their barrel cellars due to low air humidity levels which favour the evaporation of wine through the wood of the barrels. A humidity level of 80% RH, or higher, lowers losses due to spontaneous evaporation.

Microelectronics and pharmaceutical cleanroomsRelative humidity is one of the fundamental criteria for the operating conditions of a cleanroom with very strict tolerance limits, often ±1% RH; this affects the risk of electrostatic discharge, the speed of chemical reactions, capillary action, etc.

Paint and varnish roomsThe automotive and aeronautical industries use water-based varnishes that require strict control over ambient temperature-humidity conditions.

Special humidifiers with silicon-free certification are available to avoid fish-eye defects.

Museums, art galleries, archivesCorrect ambient stability is essential to preserve works of art and objects over time. If canvases were to change dimensions over time due to variations in relative humidity, paintings would be irreversibly ruined, as would books, wooden works or art, paintings on wooden surfaces, etc.

Textiles industryThe right humidity level minimises breaks in thread as well as dust produced as a result of chafing, eliminates static electricity and adhesion and therefore increases the productivity of the machinery.

17

datacenters - evaporative humidification and cooling

The need to humidify datacenters is due to the possibility that the accumulation of static electricity can damage the electronic components in the computers when discharged. The risk is much greater when the air is “dry”, i.e. low humidity. The physical explanation of the phenomena is that levels of humidity exceeding 40% produce a very fine film of liquid on surfaces, which is invisible to the naked eye, but which discharges any electrostatic charges produced to earth and thus prevents the accumulation of the electrostatic charges, which can be dangerous. Moreover,the liquid film reduces friction due to rubbing and therefore the generation of electrostatic charges.Low humidity levels are frequent in datacenters due to the generation of heat by the electronic equipment, which have several kW power per square metre of floor plan. By heating the air the relative humidity decreases, thus increasing the generation of static electricity.

There are various types of datacenters, which are characterised by their size and also the configuration of the air-conditioning system. The most traditional are systems with server positioned in

the centre of the environment and air-conditioning units positioned around the perimeter (Close Control Units - CCU), while the under-floor and the plenum or false ceiling are exploited for the air flow. In layouts with hot aisle and cold aisle, the servers are aligned in a way that they take in cold air from the cold aisle, heat it and then introduce it into the hot aisle. Air conditioning units are installed (in row cooling mode) at regular intervals along the series of servers for cooling. These take in the air from the hot aisle, cool it down and then introduce it into the cold aisle. The air-conditioning units can be direct expansion type, with outdoor condensing units, or water type with remote chiller unit. Datacenters are also appearing that make maximum use of the potential for freecooling, where necessary enhanced by a direct and indirect evaporative pre-cooling unit. Modular datacenters have recently been developed with containers that enclose the freecooling system, evaporative freecooling system, “mechanical” air-conditioning unit and the space that houses the server.

Humidity control

minimises the risk of

electrostatic discharges,

thus guaranteeing service

continuity.

Evaporative cooling

maximises energy saving in

large datacenters.

Optimist“Atomisers - evaporative

cooling” p. 75

ChillBooster“Atomisers - evaporative

cooling” p. 75

KUE“Immersed electrode

humidifiers” p. 31



datacenters - evaporative humidification and cooling

Evaporative humidification and coolingAdiabatic humidifiers are used increasingly for evaporative cooling in datacenters. Most of the energy consumed in datacenters is due to the air-conditioning systems for the removal of the heat generated. The tendency for saving energy contributes to the diffusion of simple freecooling systems and those with evaporative cooling. In fact, considering that by atomising 100 l/h of water, a cooling capacity of 70kW is obtained for power consumption of 1kW, it can be understood immediately how advantageous this technology is. The maximum humidity limit in datacenters is normally high, up to 80% R.H. making evaporative systems an effective and efficient solution for energy saving and therefore for the reduction of running costs. Heat exchangers can also be profitably used. These allow development of freecooling systems with indirect cooling with the advantage of not having to introduce outside air into the room.

One solution for all applicationsThe datacenter humidification systems are introduced inside the room conditioning systems (CCU). These are typically immersed electrode units for the production of steam, which is rapidly absorbed by the air, even in very small spaces. In systems with air handling units, the humidifier is installed in an appropriate section and, if an atomising appliance, it is also used to obtain efficient evaporative cooling. Humidifiers and evaporative coolers are more increasingly used in containers/shelters for modular datacenters and telecom applications. Wall systems can be used in datacenters for local control of humidity: steam generator humidifiers are available with spray blowers and adiabatic ultrasound humidifiers, which humidify and cool the air.

Control and efficiencyThe datacenters are divided into classes with much stricter limits allowed for the temperature and humidity the more critical the equipment contained and the continuity of the service requested. In all cases, control of the humidifiers and their integration with the air-conditioning system is essential in order to generate the amount of steam requested using just water and the minimum amount of energy. Efficiency is maximised by the further integration of direct and indirect freecooling systems enhanced by evaporative cooling.

100

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80

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Mechanicalcooling

only

Fresh air free cooling

Assisted IEC adiabatic cooling

DEC adiabatic cooling

21

Low air humidity affects both health and well being of people. During the wintertime, the air inside buildings is heated to a temperature of 20-25°C with the consequence that relative humidity decreases to values of 10-30%, which is perceived as dry air, even if there is fog outside. The dry air favours the evaporation of water from the skin, which cracks and causes dryness of the throat and nose and the respiratory tract etc. favouring the onset of typical winter illnesses.It is for this reason that air-conditioning systems that control both temperature and humidity of the air are used in hospital wards; the latter being maintained not too low but also not too high.To prevent propagation and proliferation of biological contaminants, the humidity should ideally be kept between 40% to 60%R.H.

Accurate control of the humidity also contributes to protecting the electronic equipment from electrostatic discharges, making the hospital safer for staff and visitors and protecting the health of the patient at the same time. Dry air in the winter increases the dust in the air deriving from pieces of material and particles of

skin that people lose. This causes problems for persons with allergies or asthma, which can be reduced by a correct level of humidity in the air.

According to European Directive 2002/91/EC, EN ISO 13790:2008, EN 13779:2008 VDI 6022, DIN 1946-4, Italian Presidential Decree dated 14 January 1997, UNI11425 (just to mention a few) ventilation and air-conditioning systems in operating theatres must ensure ideal temperature-humidity conditions for the work of doctors, also considering the patient’s needs. The humidification systems must be designed in a way not to contribute to the production and spread of contaminants, be easy to access, clean and control. Emphasis is given to continuity of service, in particular in operating theatres: humidifiers are used that guarantee operating continuity and “do not stop” for maintenance. Accurate humidity control is therefore not only an accessory, but a legal requirement.

hospitals and operating theatres

Health, well-being,

safety and conformity

to standards with

humidification of the

departments and operating

theatres.

ChillBooster“Atomisers - evaporative

cooling” p. 75

ultimateSAM“Centralised steam

distributors” p. 47

heaterSteam“Heater humidifiers” p. 39

humiFog“Pressurised water humidifiers” p. 55

heaterSteam“Heater humidifiers” p. 39

ir33+ir33+ range for commercial refrigeration

hospitals and operating theatres

ir33+Range of electronic controllers for stand-alone refrigeration units, natural evolution of the ir33 range. These technologically advanced and user-friendly products have been designed with particular attention to detail and energy saving as well as guaranteeing quality regarding hospital preservation, ir33+ is intuitive for the user, aesthetically pleasant and also guarantees notable energy saving . Particular attention has been paid to the user interface that is now in line with the most modern electronic instruments.

Guaranteed hygiene with steam humidificationThe isothermal humidification process consists in the introduction of steam, generated by boiling water, into the environment. The steam can be generated locally, making use of electricity or gas. The choice of the source of energy depends on availability, both of the system and peak power requested and also the cost. The type of water to be used must not be underestimated: mains drinking water is surely suitable, but it leads to periodic humidifier shutdown for maintenance. This essentially consists in the removal of mineral salts that have accumulated during boiling. Using demineralised water means maintenance is minimised and operating continuity is guaranteed; it is however more expensive. The steam generator humidifiers guarantee maximum hygiene safety because the temperature of the steam ensures it contains no potentially noxious microorganisms. For this reason, it is good practice to use the steam humidifier in operating theatres, as well as it being explicitly requested by Law in some countries such as Austria.

Steam humidification efficiencyIn hospital applications, humidification is often obtained by making use of centralised steam, which is distributed through pressurised pipes to be used in many ways in hospital activities, including sterilisation. The ultimate SAM is a humidification system that makes use of a source of clean steam, at atmospheric pressure or pressurised, and evenly distributes it into the flow of the air handling unit in order to favour absorption in a short distance. Energy and water savings are obtained thanks to air pocket insulation of the steam distributors: steam condensation is minimised and therefore also the waste of energy and water. Steam humidification is good practice in hospital applications, in particular in operating theatres as it is inherently safe.

Humidification and energy savingDuring the adiabatic humidification process, water is atomised into very small droplets, which are introduced into the air where they evaporate spontaneously, thus humidifying it. The heat necessary for vaporisation is not supplied by external sources, but rather by the air itself, which is cooled.The power required by adiabatic humidifiers is therefore rather modest and lower than for isothermal units: a reduction in running costs is obtained, along with the necessary power installed. On the other hand, the adiabatic humidification must be generated with hygienically safe systems, i.e. using demineralised water, construction materials and techniques that do not favour stagnation and proliferation of bacteria. Moreover, they must be easy to maintain, clean and inspect. All of these features can be found in humiFog, which has obtained VDI6022 certification, “Hygienic standards for ventilation and air-conditioning systems, offices and assembly rooms” and DIN1946 certification. For this reason its use in hospitals is increasing. In Italy, refer to “Guidelines for the definition of technical preventive maintenance protocols on air-conditioning systems“ - Official Gazette no. 256 dated 3 November 2006, which essentially implements VDI6022

25

steam bath

The steam bath uses steam for purification treatments of the body through transpiration of the skin. The use of the steam bath, or hammam as it is called traditionally by the Moroccans, has been used since the times of the Ancient Greeks and Egyptians and, due to its purification properties and benefits, is also used today. The treatment takes place in a room with 100% R.H., which produces a mist with stratified temperature from 20-25°C at floor level up to 40-45°C at head height. With respect to the dry environment of the sauna, perspiration is less intense, but considering that the stay inside is longer, the amount of sweat transpired at the end of the treatment is clearly higher. The steam bath has several beneficial effects: • thanks to natural perspiration, the skin is

cleaned and purified deeply;• it is excellent for the respiratory tracts;• it favours vasodilatation and the

circulation of the blood;• it has a toning, relaxing effect that

contributes to reducing everyday stress.

The applications are divided by dimension and use of the steam bath, from home to commercial/professional use, i.e. wellness centres, spas, gyms, hotels etc.

Steam humidifiers are the heart of steam baths: steam generators for creating ideal humidity and temperature conditions for the treatment desired. The humidifiers are used to generate steam and raise the temperature, maintaining it between 40 and 45°C with 100% relative humidity. The type of water available for the steam generator affects the periodical maintenance of the appliance: normal mains water leaves deposits of mineral salts during boiling, which must be periodically removed and which also cause unit shutdown. Even though the use of demineralised water is more expensive, the saline deposits are minimised thus greatly reducing unit shutdown periods for maintenance.Essences, for example eucalyptus, are often added to the steam to further enhance the sensation of well-being during the session.

A natural purification

treatment for psychophysical

well-being:

• purification of the skin;

• simulation of blood

circulation;

• relaxation from stress.

humiSteam Wellness“Sensors and protection devices” p. 91

Active temperature/humidity probes“Sensors and protection devices” p. 91

Steam nozzles“Accessories” p. 51

gaSteam“Gas-fired humidifiers” p. 43

UE “W” control“Sensors and protection devices” p. 91


steam bath

1

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3

4

5

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The ideal solution: humiSteam wellnessThe humiSteam Wellness steam generator is a complete system developed especially to satisfy typical requirements of a steam bath application:• steam generator with immersed

electrode technology,• steam bath temperature control; • use of normal mains water and

cleanable or easily replaceable cylinders;• daily and weekly operating time periods

with different temperature set points;• management of 3 actuators for the

distribution of essences and 1 for the “cleaning and disinfecting” cycle.

• management of 2 fans and light inside the cabin.

Moreover, the display-keypad unit can be separated from the humidifier and connected at a distance in order to facilitate use in the various applications, even for non-expert users.

Low maintenance steam bath: heaterSteam model “T”heaterSteam, electric heater steam generator, is used in steam bath applications when humidifier maintenance is to be limited by using demineralised water instead of mains water. By minimising the deposits of mineral salts and the lime scale, unit shutdown for maintenance is also limited. Maintenance consists mainly in cleaning the heating elements, which are also available with a non-stick treatment. heaterSteam is more tolerant to the features of the supply water also if they change over time or according to the place of installation. The simple and reliable steam generator solution for steam baths.

Well-being and savings: gaSteam Medium/large sized steam baths are often fitted with gaSteam steam generator humidifiers: the steam is produced thanks to the combustion of gas which, through a highly efficient heat exchanger, heats the water up to boiling point. gaSteam is generally supplied with demineralised water, thus minimising the deposits deriving from boiling and thus limiting the operations for cleaning the heat exchanger and guaranteeing running continuity; the latter is fundamental when used in a wellness centre, spas and hotels. Gas often represents a source of energy that is widely available at a much lower cost than electricity, so much so that in these cases gaSteam is the ideal solution for medium and large steam baths, whether they be for residential or commercial applications.

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3

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5

6

cleaning and disinfecting control

essence control

light control

fan control

remote control display

clock programming function

Isothermal humidification

31

Immersed electrode humidifiers

The operation of immersed electrode humidifiers is based on a very simple physical principle.

As common drinking water contains a certain quantity of dissolved mineral salts, and is consequently slightly conductive, applying a voltage to metal electrodes immersed in the water creates an electric current that heats the water until producing steam (Joule effect).

The quantity of steam produced is proportional to the electric current, which is in turn proportional to the water level.

This electric current is measured by a current transformer: by varying the level of water using a drain solenoid valve and due to the evaporation process, the current, and consequently steam production, can be modulated.

As the steam produced does not carry mineral salts, the salt concentration in the water and therefore the conductivity increases, and has to be periodically diluted by draining part of it using the drain pump and replacing it with new water.

In addition, lime scale is deposited over time and covers part of the cylinder, which must be replaced or cleaned.

Compared to electric heater or gas-fired humidifiers, immersed electrode humidifiers:• are less expensive to purchase;• operate with drinking water (not

completely demineralised or softened);• require periodical replacement (or

cleaning) of the cylinder;• feature modulation suitable for comfort

or industrial applications, without extreme requirements.

CAREL has been manufacturing immersed electrode humidifiers since the 1970s and can draw benefit from its know-how in the field of electronic controllers: precision control, reliable electronics and sophisticated and complete control software.

The CAREL solutions for immersed electrode humidifiers are humiSteam and compactSteam.


humiSteam

Three different types of controller are available.

“Basic”(Y) (1.5 to 65 kg/h)Steam production is controlled by an external humidistat in ON/OFF mode (voltage-free contact) or by an external controller proportionally to demand (0 to 10 V, 2 to 10 V, 0 to 20 mA, 4 to 20 mA; fitted with RS485 interface using Modbus® protocol

“Xplus” (X) (1.5 to 130 kg/h)Built-in controller based on pHC (technology pCO) with pGD:• ON/OFF by external humidistat;• proportional to an external signal (0 to

1 V, 0 to 10 V, 2 to 10 V, 0 to 20 mA, 4 to 20 mA);

• modulating based on an external signal from BMS or room humidity probe with configurable set point, plus a limit probe in the duct, where required;

• modulating based on the set point and temperature probe reading or signal from a BMS (Wellness model);

Other important features include:• definition of daily and weekly time

bands;• connectivity via various types of LAN

(e.g.: Modbus®, BACnet™, LON®);• alarm log management;• remote diagnostics via GSM (optional).

W controller Same as the Xplus but for steam baths:• definition of different temperature set

points for different time bands;• management of essences (3) and a

“sanitation” cycle;• management of fans (inside and

exhaust) and inside light.

humiSteam is suitable for installation in civil environments, offices, hospitals, industrial facilities, and steam baths. humiSteam is designed for installation in rooms, using the steam blower, and for installation in air ducts, using the new range of linear steam distributors. humiSteam works on mains water with a conductivity between 75 and 1250 µs/cm, and its control software automatically adjusts operation according to the characteristics of the water, so as to optimise operating life without maintenance.

The range of humiSteam humidifiers includes the following models• humiSteam Xplus (X), suitable for

all types of applications that require independent control with humidity probe, range from 1.5 to 130 kg/h;

• humiSteam basic (Y), ideal for applications in which the humidity is controlled by an external device, such as a BMS or a humidistat, with range from 1.5 to 65 kg/h;

• humiSteam “Wellness”(W) for steam baths, which features the same control electronics as the Xplus model.

Main pluses of this product:• ease of use: all humiSteam models

feature a large, simple and user-friendly alphanumeric LCD;

• reliability: all humiSteam models feature power connections that mean no tools are required when changing the cylinder, meaning more overheating due to less accurate maintenance;

• performance: the software makes the humidifier much faster to start and respond to variations in humidity demand. In addition, specific hygiene and safety functions are available (for example, the antifoam system), as well as a specific function for use with “problematical” water;

• connectivity: both the humiSteam Xplus (X) and humiSteam basic (Y) models offer the Modbus® RS485 connection as standard; in addition, the Xplus

Controllers

UE*

high-end controller (deriving from the CAREL pCO family programmable controllers) includes a series of optional communication protocols and several advanced functions, such the possibility to program operation and set points according to daily and weekly time bands, event history (recording events and alarms with date and time) and the possibility of remote diagnostics via a GSM connection.

Advantages• AFS system (Anti Foaming System):

detects foam to prevent droplets of water being carried by the steam;

• cylinders with galvanised electrodes and anti-scale filter on the bottom; openable and fireproof cylinders are also available;

• steam production with continuous modulation from 20% to maximum rated output (from 10% for 90 and 130 kg/h models);

• built-in conductivity sensor and control software to optimise energy efficiency and operating life, with constant performance over the life of the cylinder.

33

Features

UE0

01*

UE0

03*

UE0

05*

UE0

08

UE0

09*

UE0

10*

UE0

15*

UE0

18*

UE0

25*

UE0

35*

UE0

45*

UE0

65*

UE0

90*

UE1

30*

General

Rated steam production (kg/h) 1.5 3 5 8 9 10 15 18 25 35 45 65 90 130Power consumption (kW) 1.12 2.25 3.75 6.00 6.75 7.50 11.25 13.5 18.75 26.25 33.75 48.75 67.5 97.5Power supply (other voltages upon request)• 200, 208-230 Vac -15/10%, 50/60 Hz single-phase• 200, 208, 230 Vac -15/10%, 50/60 Hz three-phase • 400, 460, 575 Vac -15/10%, 50/60 Hz, three-phase

Steam connection (mm) Ø 22/30 Ø 30 Ø 40 Ø 2x40 Ø 4x40

Outlet pressure limits (Pa) -600 to 1500 -600 to 1300 -600 to 1350 -600 to 2000Number of cylinders 1 1 2Operating conditions 1T40 °C, 10 to 90% rH non-

condensing1T40 °C, 10 to 90% rH non-condensing

Storage conditions -10T70 °C, 5 to 95% rH non-condensing

-10T70 °C, 5 to 95% rH non-condensing

Degree of protection IP20 IP20Water fi ll

Connection 3/4”G male 3/4”G maleTemperature limits (°C) 1T40 1T40Water pressure limits (MPa - bar) 0.1 to 0.8 - 1 to 8 0.1 to 0.8 - 1 to 8Instant fl ow-rate (l/m) 0.6 0.6 0.6 1.1 0.6 1.1 1.1 1.1 5.85 5.85 5.85 7 14 14Total hardness (°fH) (*) 10 to -40 10 to 40Conductivity limits (µS/cm) (*) 75 to 1250 75 to 1250Water drain

Connection Ø 40 Ø 40Temperature (°C) ≤100 ≤100Instant fl ow-rate (l/m) 7 22.5 45Blower

Number 1 2Type VSDU0A* VRDXL*Power supply (Vac) 24 230Rated power (W) 37 35Rated air fl ow-rate (m3/h) 192 650

Network

Built-in network connection UEX* and UEY*: Modbus®Optional network connections UEX* and UEW*: RS485, BACnet™, LON®, Ethernet®, RS232 + GSM (optional)Controller UEY* / UEX* / UEW* UEX*

standard

Dimensions in mm (inches) and weights in kg (lbs)

A

C

B

H

L W

Model AxBxC weight LxWxH weightUE001 to UE018 365x275x712 (14.37x10.83x28.03) 17 (37.48) 500x400x850 (19.68x15.75x33.46) 20 (44.09)UE025 to UE045 545x375x815 (21.46x14.76.32.09) 34 (74.95) 665x465x875 (26.18x18.31x34.45) 39 (85.98UE065 635x465x890 (25x18.31x35.04) 44 (97) 750x600x940 (29.53x23.62x37.01) 51 (112.43)UE090 to UE130 1150x465x890 (45.27x18.31x35.04) 70 to 74 (154.32 to 163.14) 1270x600x940 (50x23.62x37.01) 77 to 81 (169.75 to 178.57)


U E _ _ _ _ _ _ _ _

01 = European versionU1= UL certifi ed version for the American market

power supply:U= 208 V 1~D= 230 V 1~W= 208 V 3~K= 230 V 3~L= 400 V 3~M= 460 V 3~N= 575 V 3~

Unit code

steam production:001= 1.5 kg/h

003= 3 kg/h005= 5 kg/h008= 8 kg/h009= 9 kg/h

010= 10 kg/h015= 15 kg/h018= 18 kg/h025= 25 kg/h035= 35 kg/h045= 45 kg/h065= 65 kg/h090= 90 kg/h

130= 130 kg/h

type of controller:X= X-plus controller

W= Wellness controllerY= basic controller

options:Ø = standard cylinderC= standard openable cylinder1= cylinder for low conductivity2= openable cylinder for low conductivity

NB: not all the combinations of codes are available

OVERVIEW DRAWING humiSteam Y-X-W

room applications duct applications

VSDU0A0001 & VRDXL0000: steam blowerVSDBAS0001: remote installation support for VSDU0A

water drain

water fi ll power supply

Probes

DPD*: temperature and humidity probe for ducts

steam bath applications

DP*: linear steam distributor (inlet Ø 22 mm, Ø 30 mm, Ø 40 mm)

SDP*: plastic nozzle up to 18 kg/h steam

condensate drain steam transfer pipe

“Y” connector

DPW*: temperature and humidity probe for civil environments

DPP*: temperature and humidity probe for industrial environments

ASET*: temperature and humidity probe for steam baths

NTC*: temperature probe for UEW

35

A

B

All CAREL immersed electrode humidifiers feature sophisticated control software that automatically adapts the operating parameters to the characteristics of the water; nonetheless, the optimum balance between cylinder life, variation in steam production and speed of response depending on the type of water and power supply can only be achieved by changing the shape and the position of the electrodes. For this reason, CAREL immersed electrode humidifiers today feature the widest choice of cylinders, with specific electrodes for water with conductivity between 75 µS/cm and 1250 µS/cm, for capacities between 1 and 65 kg/h, and for power supply voltages between 208 V and 575 V.All humiSteam cylinders feature galvanised electrodes and are fitted with filters to avoid formation of lime scale at the bottom, consequently preventing blockage of the drain.

Openable cylindersThe new humidifiers can be fitted with “disposable” cylinders made from non-flammable polypropylene, class HB according to UL94, or alternatively openable and therefore cleanable cylinders, made from class V0 plastic (UL94 standard).The openable cylinders feature quick click-on closing, with a rubber gasket to ensure perfect water-tightness between the two parts of the cylinder.

Cylinders: quick snap-on connectionThe snap-on connectors (A: click onto the specially shaped terminal on the electrodes) ensure:• higher reliability, avoiding the risk of

overheating due to incorrect tightening of the nuts when replacing the cylinder,

• quicker cylinder replacement times, as the connections can be made in just a few seconds, with no tools required.

For backward-compatibility with units

Cylinders

already installed in the field, two adapter kits are available, made up of snap-on connector, gasket and fastening screw that will initially be distributed together with spare cylinders (B):• 98C615P004 quick connector adapter

for eyelet lugs, 5 mm pin (BL0*1* and BL0*R*);

• 98C615P005 quick connector adapter for eyelet lugs, 6 mm pin (BL0*2*, BL0*3*, BL0*4*).

BL*


Disposable cylinder selection tables

humiSteam: single-phase 230 Vac (220 to 240 V)

water conductivity

low medium high

Capacity kg/h 75/350 µS/cm 350/750 µS/cm 750/1250 µS/cm1, 3 ridotto BL0SRE00H2 BL0SRF00H21, 3 BL0S1E00H2 BL0S1F00H25 BL0S2E00H2 BL0S2E00H29 BL0S3E00H2 BL0S3F00H2

humiSteam: three-phase 400 Vac (380 to 415 V)

water conductivity

low medium high

Capacity kg/h 75/350 µS/cm 350/750 µS/cm 750/1250 µS/cm3 BL0T1A00H2 BL0T1C00H2 BL0T1D00H25, 8 BL0T2B00H2 BL0T2C00H2 BL0T2D00H210, 15, 18 BL0T3B00H2 BL0T3C00H2 BL0T3D00H225, 35 BL0T4C00H2 BL0T4D00H2 (*)45, 90 (2x) BL0T4B00H2 BL0T4C00H2 (*)65, 130 (2x) BL0T5B00H0 BL0T5C00H0

humiSteam: single-phase 208 Vac

water conductivity

low medium high

Capacity kg/h 75/350 µS/cm 350/750 µS/cm 750/1250 µS/cm1, 3 ridotto BL0SRE00H2 BL0SRF00H21, 3 BL0S1E00H2 BL0S1F00H25 BL0S2E00H2 BL0S2E00H29 BL0S3E00H2 BL0S3F00H2

humiSteam: three-phase 208 and 230 V

water conductivity

low medium high

Capacity kg/h 75/350 µS/cm 350/750 µS/cm 750/1250 µS/cm3 BL0T1A00H2 BL0T1B00H25, 8 BL0T2A00H2 BL0T2A00H210, 15 BL0T3A00H2 BL0T3A00H225 BL0T4B00H2 BL0T4C00H2 (*)35 BL0T4B00H2 (*)45 BL0T5A00H0 BL0T5A00H0 (BL0TSB00H0 e 230 V)

humiSteam: three-phase 460 V

water conductivity

low medium high

Capacity kg/h 75/350 µS/cm 350/750 µS/cm 750/1250 µS/cm3 BL0T1B00H2 BL0T1D00H25, 8 BL0T2C00H2 BL0T2D00H210, 15, 18 BL0T3C00H2 BL0T3D00H225 BL0T4D00H2 (*)35, 45, 90, (2x) BL0T4C00H2 BL0T4D00H2 (*)65, 130 (2x) BL0T5C00H0 BL0T5D00H0

humiSteam: three-phase 575 V

water conductivity

low medium high

Capacity kg/h 75/350 µS/cm 350/750 µS/cm 750/1250 µS/cm5, 8 BL0T2C00H2 BL0T2D00H210, 15, 18 BL0T3C00H2 BL0T3D00H225, 35, 45, 90 (2x) BL0T4D00H2 (*)65, 130 (2x) BL0T5D00H0

Openable cylinder selection tableshumiSteam: three-phase 400 V (from 380 a 415 V)

water conductivity

low medium high

Capacity kg/h 75/350 µS/cm 350/750 µS/cm 750/1250 µS/cm3 BLCT1A00W2 BLCT1C00W2 BLCT1D00W25, 8 BLCT2B00W2 BLCT2C00W2 BLCT2D00W210, 15, 18 BLCT3B00W2 BLCT300W2 BLCT3D00W225, 35 BLCT4C00W2 BLCT4D00W245, 90 (2x) BLCT4B00W2 BLCT4C00W265, 130 (2x) BLCT5B00W0 BLCT5C00W0

humiSteam: single-phase 230 V (from 220 a 240 V)

water conductivity

low medium high

Capacity kg/h 75/350 µS/cm 350/750 µS/cm 750/1250 µS/cm1, 3 BLCS1E00W2 BLCS1F00W25 BLCS2E00W2 BLCS2F00W29 BLCS3E00W2 BLCS3F00W2

(*) for models UE 25, 35, 45 kg/h manufactured until October 2003 or with serial number less than 501,000, use the Y connector.(**) as well as the voltages shown here, openable cylinders are available for the following voltages: 208 V single-phase, 230 V three-phase, 460 V three-phase, 575 V three-phase.Important: on models UEH and UEP fitted with cylinders featuring an electrical bridge between two or more electrodes, the new snap-on data connectors cannot be used, as it is not possible to connect more than one cable to the same pin. On these units the spare cylinders retain the threaded pins and the same part numbers must be purchased. The following models of cylinder are affected: BLOS2F00H0, BLCS2F00W0, BL0S2E00H0, BLCS2E00W0, BL0T2B00H0, BLCT2B00W0, BL0T2A00H1, BLCT2A00W1, BL0T3B00H0, BLCT3B00W0, BL0T3A00H1 and BLCT3A00W1.

37

compactSteam

CH*

compactSteam is the CAREL proposal for the humidification of prestigious residential environments, professional offices or small and medium retail premises.compactSteam is an immersed electrode humidifier, with following main features:• elegant and discrete design, ideal for

installation in any environment;• built-in steam distributor, with

adjustable louvers and very silent operation;

• large graphic LCD for straightforward understanding;

• market-leading functionality, safety and user friendliness;

• models from 1.6 to 5.4 kg/h;• electrical and water connections can be

completely concealed from view, and drain water temperature never exceeds 60 °C. In addition, if no humidification is required for more than 3 consecutive days, the water is automatically drained for maximum hygiene.

A version without built-in distributor is also available, for steam distribution in the duct, as well as a remote blower, which allows steam to distributed in a different room from where the humidifier is installed.

ControlThe sophisticated microprocessor controller automatically manages all the functions of the unit, and includes a self-diagnostic system with simple and straightforward indications, both numeric and using icons, on the large LCD.The controller includes an ON/OFF and proportional 0 to 10 V input, a remote enabling input, an alarm relay, an input for a flow sensor and a 24 V power supply output. Steam production is modulated continuously from 20% to maximum capacity, and water level is controlled by a solenoid fill valve and a drain pump.The built-in fan is only on when steam is being produced, and is stopped with a delay to prevent condensation.Room humidity control is managed by an external humidistat, for example Clima; this is powered by compactSteam and can manage the unit proportionally, for even more precise and comfortable humidity control.compactSteam is available with or without steam blower, with capacities from 1.6 to 5.4 kg/h.


A

C

B

H

L W

Model AxBxC weight LxWxH weightCH001* 341x204x600 (13.42x8.03x23.62) 8 (17.64) 520x380x740 (20.47x14.96x29.13) 10 (22.05)CH002* 341x204x600 (13.42x8.03x23.62) 8 (17.64) 520x380x740 (20.47x14.96x29.13) 10 (22.05)CH003* 341x204x600 (13.42x8.03x23.62) 8 (17.64) 520x380x740 (20.47x14.96x29.13) 10 (22.05)CH005* 341x204x600 (13.42x8.03x23.62) 8 (17.64) 520x380x740 (20.47x14.96x29.13) 10 (22.05)

Other features• maximum capacity selectable in steps

of 5%;• 0 to 10 V proportional control and

modulation from 20 to 100%;• automatic management of water

concentration and foam;• remote enabling signal input and alarm

relay;• cylinder operating hour counter,

resettable.


C H _ 0 _ V _ _ _ _

power supply:1= 110 Vac single-phase2= 208 to 230 Vac single-phase

rated steam production:1= 1.6 kg/h2= 2.5 kg/h3= 3.2 kg/h5= 5.4 kg/h

Unit code

0= for ducts (without built-in fan)F= for rooms (with built-in fan)

customisation00= standard version

product revision

OVERVIEW DRAWING compactSteam

duct applications

ADC*: humidistat

water drain

water fi ll power supply

condensate drain steam transfer

39

Heater humidifiers

Immersed heater humidification is becoming increasingly required in work specifications where:• humidity must be controlled precisely

(museums, laboratories, clean rooms);• water quality is not constant or is

problematic (for example, aboard ships);• periodical maintenance needs to be

minimised (using demineralised water).

Immersed heater humidifiers, unlike immersed electrode units, can operate on demineralised water, as they do not exploit the electrical conductivity of the water.

Periodical maintenance can therefore be greatly reduced, due to the minimum formation of lime scale.

Weighing against this, the resistive elements must always be completely immersed in the water, to avoid overheating, unlike the situation with electrodes, in which the water level is adjusted to modulate the flow-rate of steam.

The operation of an immersed heater humidifier then requires water level sensors to ensure complete immersion of the electrodes, as well as components (solid state relays) that adjust the amount of heat transferred to the water so as to precisely modulate steam flow-rate.

These characteristics make the heater units more complex than their counterparts with electrodes, yet independent of the characteristics of the water, and with much more precise modulation of the flow-rate. In addition, as heater humidifiers are intrinsically subject to overheating, the quality of design and the presence of safety systems are essential to ensure reliable service over time.

The CAREL solution in this market segment offers the maximum in constructional quality and performance, meaning excellent reliability over time and extreme precision of control for the more critical applications.

Heater humidifiers

UR*

heaterSteam

Controllers

Three different types of control unit are available:• C: ON/OFF controller;• H: built-in humidity controller, with

serial port for Modbus® networks via an external gateway;

• T: built-in temperature controller for stand-alone applications (for example, steam baths).

Type C: ON/OFF controllerThe unit works at 0% or 100% of maximum production, which can be set to 30%, 50%, 75% or 100% of rated capacity.

Type H: built-in humidity controllerType H heaterSteam models can be configured at any time to operate in the following modes:• ON/OFF, by an external humidistat;• proportional to an external signal from

BMS (0 to 1 V, 0 to 10 V, 2 to 10 V, 0 to 20 mA, 4 to 20 mA);

• modulating based on an outside humidity probe, and, where necessary, a limit probe in the duct.

Except for in ON/OFF mode, steam production is modulated linearly from 10% to 100% of maximum flow-rate, ensuring precision equal to ±1% RH even with a large number of air changes.The preheating function (available on models H and T) can be activated to maintain the water at a set temperature (from 70 to 90 °C) so as to ensure an immediate start to steam production. Any malfunctions are indicated on the display and signalled via the alarm relay.

Type T: built-in temperature controllerThis works in the same way as model H, with the difference that production is controlled according to temperature rather than relative humidity (suitable for steam baths).

The range of heaterSteam immersed heater humidifiers includes models producing from 2 to 60 kg/h of steam, and can operate on drinking water or demineralised water, which practically eliminates the need for maintenance.heaterSteam features exclusive and patented technological solutions, such as electric heaters embedded in corrosion-proof aluminium alloy casting with a large heat exchange surface, and built-in temperature sensors to prevent overheating. The temperature sensor has the dual function of protecting against overheating, for maximum reliability over time, and detecting excessive lime scale deposits amply in advance, so as to allow correct preventive maintenance.Modulating control with solid state relays ensures high precision humidity control.For each capacity there are two variants: basic and full optional.The full optional units, compared to the basic versions, have heat insulation around the boiler for maximum energy savings, and heating elements coated in non-stick material to facilitate the separation of lime scale.In addition, a water temperature sensor is fitted for managing the useful preheating function, giving a rapid response whenever there is humidification demand.All models have an automatic system for measuring supply water conductivity, which optimises management of the drain cycles without requiring analysis of the water in the installation. This function also means energy savings and a reduction in maintenance.Models from 2 to 10 kg/h have a cylindrical stainless steel boiler, which is easy to remove for cleaning.The heavier models, from 20 to 60 kg, have a stainless steel boiler with a rectangular base and large openings (front and top) for easy maintenance without having to remove the boiler.Pluses of this product include:• extreme precision, up to ±1% RH;• electric heaters are embedded in a

corrosion-proof light alloy casting with a large surface area, guaranteeing perfect diffusion of heat and exceptional reliability over time (CAREL patent);

• temperature sensors inserted into the heating elements prevent any overheating, and detect well in advance the need for cleaning any lime scale deposits (patented method);

• heating elements coated with Niflon, a non-stick and corrosion-proof material (full optional models) are very easy to clean);

• models H and T, with solid state relays, allow continuous modulation of steam production starting from 10% of capacity, with very precise control; model C provides ON/OFF operation;

• the patented “Anti Foaming System” detects foam and prevents any droplets of water being carried with the steam;

• model H supports a limit probe to prevent any condensate forming in the duct (better hygiene!);

• in models H and T the preheating function allows a rapid response to the request for steam production;

• model H can also control an external dehumidification device.

41

Features UR002* UR004* UR006* UR010* UR020* UR027* UR040* UR060*

General

Rated steam production (kg/h) 2 4 6 10 20 27 40 60Power consumption (kW) 1.5 3 4.5 7.5 15 22.5 30 45Power supply (other voltages upon request)• 230 Vac -15/10%, 50/60 Hz single-phase• 400 Vac -15/10%, 50/60 Hz three-phase

Steam connection (mm) Ø 30 Ø 40 2 x Ø 40Steam pressure (Pa) 0 to 1500 0 to 2000Number of heaters 1 1 3 3 6 6 6 9

Operating conditions 1T40 °C, 10 to 60% RH non-condensingStorage conditions -10T70 °C, 5 to 95% RH non-condensingDegree of protection IP20Water fi ll

Connection (mm) 3/4”G maleTemperature limits (°C) 1T40Water pressure limits (MPa - bar) 0.1 to 0.8 - 1 to 8Instant fl ow-rate (l/m) 0.6 0.6 1.2 1.2 4 4 4 10Total hardness (°fH) (*) 5 to 40Conductivity limits (µS/cm) (*) 0 to 1500Water drain

Connection Ø 40Temperature (°C) <100Instant fl ow-rate (l/m) 5 22.5Blower

Number 1 2Type VSDU0A* VRDXL*Power supply (Vac) 24 230Rated power (W) 37 35Rated air fl ow-rate (m3/h) 192 650Network

Network connection RS485, Modbus® (with optional gateway)

(*) heaterSteam can be supplied with completely demineralised water (0 °µS/cm). If supplied with softened water, the minimum hardness value indicated must be observed, and the instructions described in the manual must be followed.

Control

Features C H T

Continuous modulation (with SSR) 10 to 100% 10 to 100%Integrated controller (probes not included) (R.H.) (temp.)External ON/OFF signal

External proportional signal

Limit probe supported

Dehumidifi cation control

Remote ON/OFF

Alarm relay

Type of signal (probe or external controller) 0 to 10 V; 0 to 1 V; 2 to 10 V; 0 to 20 mA; 4 to 20 mA

Alphanumeric display

RS485 interface

standard

Versions

Features basic full optional

Heaters embedded in aluminium casting

Heaters with non-stick coating

Thermally insulated

Preheating function

Descaler bag up to 10 kg/h

Heater humidifiers


A

C

B

H

L W

Model AxBxC weight LxWxH weightUR002*, UR004* 365x275x620 (14.37x10.83x24.41) 21 (46.30) 520x380x730 (20.47x14.96x28.74) 26 (57.32)UR006*, UR010* 365x275x710 (14.37x10.83x27.95) 26 (57.32) 520x410x870 (20.47x16.14x34.25) 31 (68.34)UR020*, UR027* 690x438x887 (27.16x17.24x34.92) 63 (138.89) 680x460x1090 (26.77x18.11x42.91) 73 (160.94)UR040* 690x438x887 (27.16x17.24x34.92) 67 (147.71) 680x460x1090 (26.77x18.11x42.91) 77 (169.75)UR060* 876x438x887 (34.49x17.24x34.92 87 (147.71) 946x510x1050 (37.24x20.08x41.34) 98 (216.05)

U R _ _ _ _ _ _ 0 1

changes only for custom products0S= UR020 only

power supply:D= 230 Vac 1~U= 208 Vac 1~L= 400 Vac 3~W= 208 Vac 3~K= 230 Vac 3~M= 460 Vac 3~N= 575 Vac 3~

Unit code

rated instant steam production:002= 2 kg/h004= 4 kg/h006= 6 kg/h010= 10 kg/h020= 20 kg/h027= 27 kg/h040= 40 kg/h060= 60 kg/h

type of controller:C= ON/OFF

H= modulatingT= for steam baths

options:0= basic version1= full optional versione

NB: not all the combinations of codes are available.

OVERVIEW DRAWING heaterSteam

room applications duct applications steam bath applications

VSDU0A0001 & VRDXL0000: steam blowerVSDBAS0001: remote support for VSDU0A*


SDP*: plastic nozzle up to 15 kg/h steam

Probes





condensate drain steam transfer

“Y” connector

water drain

supply water power supply

43

Gas-fired humidifiers

CAREL’s extensive experience in the humidification sector has been used to develop the gaSteam range of gas-fired humidifiers, exploiting an energy source that is more economical than electricity. The humidifiers now have updated controllers, and the smallest model has now been upgraded to 45 kg/h (still below the 35 kW limit). The range thus now features the 45 kg/h, 90 kg/h and 180 kg/h models.CAREL gas-fired humidifiers can run on both natural gas and LPG: the changeover is made by simply modifying a number of parameters, without the need to replace any parts.

Cost effectivenessTo generate 1 kg of steam at atmospheric pressure, considering all the various factors, requires around 750 Wh of energy, either electrical or from other sources. One of the main factors when choosing solutions in the field of isothermal humidification is therefore energy cost, particularly for heavy-duty applications. Gas can be considered an ideal solution in terms of energy source, however to completely exploit its advantages, a system with high thermal efficiency is required, capable of minimising heat loss. Thanks to Ecoflam know-how, the efficiency of our humidifiers is between 92 % and 95%.The graph shows the economic comparison between a gaSteam and

an immersed electrode humidifier, expressed in terms of total cash flow in euro, including purchase, energy and maintenance costs. Even considering the higher purchase price compared to an immersed electrode humidifier, the break-even point for gas-fired humidifiers is reached quite quickly.

This graph compares the costs based on 2000 operating hours/year using 90 kg/h humidifiers, and with the current costs of gas and electricity in Italy. The break-even point is easily reached before two years, after which there are significant savings. In many other countries, the break-even point is reached even earlier, making gaSteam even more cost effective.

CertificationCAREL has paid significant attention to approval of gaSteam, so as to be able to guarantee complete product safety and achieve all major certifications. gaSteam is approved according to European CE standards, German TÜV standards and American ETL standards.In Europe, specific DVGW certification has been obtained for gas-fired appliances.

In addition, thanks to the low NOx emissions, gaSteam is approved as a class 5 appliance for models UG045 and UG090, and class 4 for model UG180: this means it can be installed in countries with very strict legislation in force.As regards applications, refer to the following standards:directive 90/396/EEC;for places subject to certification by the relevant authorities, the Italian reference standard is: Min. Decree dated 12 April 1996;for the gas line the reference is: UNI - CIG 7129 of 1972.cumulativo

CASH

FLOW

EURO


UG*

gaSteam

The family of gaSteam humidifiers features very high thermal efficiency, so as to fully exploit the cost savings of gas. The heat exchanger, which is easily removable for cleaning, is made from aluminium alloy coated with a special anti-corrosion and non-stick treatment that prevents scale from attaching.

The gaSteam humidifiers all come with the pHC electronic microprocessor controller that adopts all the best features of the CAREL pCO programmable controllers. The user interface is made up of a backlit display that features simultaneous and flexible use of graphic icons and texts in various languages. The pHC controller also comes with network connection: via the pCO family pLAN protocol (RS485 interface included), or the Modbus®, Echelon®, BACnet™, RS485 and GSM communication protocols using optional interfaces. The controller can be connected to an active probe and optional second limit probe; operation is ON/OFF or proportional based on a signal from an external controller. It can also manage a dehumidifier, and includes a complete set of diagnostics for maintenance.

SafetygaSteam is fitted with various safety devices, including:• pre-mix, room-sealed burner with forced

ventilation;• an air/gas control valve with double

safety closing;• safety negative pressure switch on

combustion air intake;• temperature sensor in the flue gas

outlet that checks for malfunctions, and provides early warning of excessive scale on the heat exchanger;

• a flame detector in the burner that closes the gas valve in the event of malfunctions;

• the patented AFS antifoam system with corresponding sensor;

• a multi-stage water level sensor;

• an automatic water conductivity control system to avoid corrosion.

Added advantages• continuous modulation from 25 to 100%

(12.5% for the 180 kg/h model);• low NOx emissions;• boiler and components in contact with

the water in AISI 304L stainless steel;• pre-heating function for a faster

response;• supply with mains water or

demineralised water. The controller can be set for use with softened water, within the limits described in the reference tables;

• frost protection function;• precision: 2% RH

Burner head (90 kg/h model)Including ignition and flame detection device.The controller manages the production of steam by adjusting the burner fan speed. The gas inlet valve controls the flow of gas as a consequence. The flame sensor controls both the automatic ignition device and gas valve: with no flame the flow of gas is shut off.

Heat exchangerThe advanced design, featuring a high transfer surface area both internally and externally, offers unrivalled energy efficiency (between 92% and 95%, according to the model); made from aluminium alloy with a special Niflon lining, which is both corrosion resistant and prevents scale from attaching, is easily removable for cleaning on the bench.

Accessories

45

gaSteam table

Features UG045* UG090* UG180*

General

Rated steam production (kg/h) 45 90 180Modulation of steam production 25 to 100% 25 to 100% 12.5 to 100%Heat input (kW) 34.8 65 130Heat output (kW) 33 62.5 125Power supply 230 Vac (-15/+10%), 50/60 Hz single-phasePower input at rated voltage (W) 180 250 400Steam outlet pressure limits (Pa) 0 to 2000 0 to 2000 0 to 2000Steam connection (dia. mm) 2x40 2x40 4x40Gas connection 1”G 1”G 1” 1/4 GTypes of gas natural gas (G20 and G25); propane (G31); butane (G30)Flow-rate/pressure on natural gas (G20) (m3St/h - Pa)

3.68 - 2000 7.21 - 2000 13.4 - 2000

Flow-rate/pressure on natural gas (G25) (m3St/h - Pa)

4.2 - 2000 8.7 - 2000 17.5 - 2000

Flow-rate/pressure on propane (G31) (m3St/h - Pa) 1.43 - 3000 2.68 - 3000 5.36 - 3000Flow-rate/pressure on butane (G30) (m3St/h - Pa) 1.10 - 3000 2.06 - 3000 4.12 - 3000Operating conditions 1T40 °C, 10 to 90% RH non-cond.Storage conditions -10T70 °C, 5 to 95% RH non-cond.Degree of protection IP20Water fill

Connection 3/4”G maleTemperature limits (°C) 1T40Water pressure limits (MPa - bar) 0.1 to 0.8 - 1 to 8Instant fl ow-rate (l/m) 10 10 18Total hardness (°fH) (*) 5 to 50Maximum conductivity limits (µS/cm) (*) 1500Water drain

Connection (dia. mm) 40Temperature (°C) ≤100Instant fl ow-rate (l/m) 25Flue gas

Air intake (dia. mm) 80 80 2x 80Flue (dia. mm) 80 80 2x 80Flue gas fl ow-rate (natural gas G20) (kg/s) 0.0163 0.0303 0.606Flue gas temperature (natural gas G20) (°C) 123 175 165NOx emissions class 5 5 4Network

Network connection pLAN over RS485 included; optional Modbus®, Echelon®, BACnet™ and RS232+GSMControl

Integrated controller

External ON/OFF or proportional controller

Preheating

Alphanumeric display

Remote ON/OFF; alarm relay

Limit probe supported

(*) gaSteam can run on completely demineralised water (0 °fH). If supplied with softened water, the minimum hardness value indicated must be observed, and the instructions described in the manual must be followed. standard


U G _ _ _ H D 0 0 2

power supply.D= 230 Vac 1~

NB: not all the combinations of codes are available

Unit code

rated instant steam production kg/h:045= 45 kg/h090= 90 kg/h180= 180 kg/h

type of controller: H= modulating

OVERVIEW DRAWING gaSteam

duct applications fl ue accessories

EXH* various fl ues and fi ttings


Probes





electrical panelwith display

fl ue gas temperature sensor

preheating temperature sensor

heat exchanger

water level sensor

drain pump

gas supply

gas cock

gas burner

drain cockdrain water

fi lter

fi ll valve

water cock with non-return device

supply water

conductivity sensor

water drain

fl ue gas

boilerantifoam sensor


A

C

B

H

L W

Mod. AxBxC peso LxWxH pesoUG045* 1020x570x1200 (40.16x22.44x47.24) 150 (330.69) 1090x620x1270 (42.91x24.41x50) 165 (363.76)UG090* 1020x570x1200 (40.16x22.44x47.24) 150 (330.69) 1090x620x1270 (42.91x24.41x50) 165 (363.76)UG180* 1020x930x1200 (40.16x36.61x47.24) 240 (529.11) 1090x980x1270 (42.91x38.58x50) 270 (595.25)

47

Centralised steam distributors

ultimateSAM is an atmospheric or pressurised steam dispersion system, designed to uniformly and effectively distribute dry steam into ducts or air handling units.SAM stands for Short-Absorption Manifold, in other words a steam dispersion system with a short absorption or non-wetting distance (even less than 0.5 m).

It has been designed to be built “to measure” for the AHU/duct, guaranteeing low heat gain (max. 2 °C/4 °F) and very low condensate formation, thanks to the air cushion insulation on the pipes.

All metal parts fitted in the AHU/duct are made from AISI 304 steel so as to guarantee hygiene and long operating life.The features of the ultimateSAM humidification system make it a perfect solution for all humidification requirements in AHUs/ducts, providing designers, installers and service personnel with the best solutions. The wide product range and choice of steam capacity, plus the numerous options, make the system ideal for use in various applications, including hospitals, the pharmaceutical industry, libraries, museums, offices, shopping centres, data centers, telecommunications and many, many others.

Main featuresSAB*/SAT*• steam: 20 to 1110 kg/h (44 to 2440

lbs/h), 0 to 4 barg (0 to 58 PSIg), also suitable for steam at atmospheric pressure;

• dimensions WxH: 447x598 mm to 3031x3181 mm in 152 mm steps (18”x24” to 120”x120” in 6” steps);

• can be supplied with/without insulation, with/without support frame, unassembled or completely assembled.

SA0*• SA0* single-pipe version also available;

steam flow-rate 20 to 140 kg/h (44 to 309 lbs/h), 0 to 4 barg (0 to 58 PSIg), also suitable for steam at atmospheric pressure; dimensions from 503 mm to 2175 mm in 152 mm steps (from 19” to 86” in 6” steps).

Benefits• holes set out along the entire height

of the pipes deliver steam uniformly, ensuring a very short non-wetting distance;

• energy saving due to insulation on the pipes, decreasing air heat gain and condensate formation;

• hygiene: ultimateSAM is made from AISI 304 steel;

• ultimateSAM can be purchased with valves controlled by electric actuators for precise modulation of steam flow into the AHU/duct;

• different configurations of ultimateSAM are available for applications with high steam flow-rates or if the required non-wetting distance is particularly short;

• the single-pipe version is insulated and is supplied with a manifold that also acts as steam trap.

System composition• AISI 304 steam distribution pipes with/

without insulation. On insulated pipes, the nozzles are made from PPS (Ryton), which has a continuous operating temperature of 220 °C/428 °F;

• AISI 304 manifold that carries the steam to the distribution pipes. The manifold is placed at the bottom for steam flow-rates from 20 to 370 kg/h (SAB*); for steam flow-rates up to 1110 kg/h, the manifold is fitted at the top (SAT* top-feed models; these are nonetheless also suitable for steam flow-rates starting from 60 kg/h);

• silicone gaskets for high temperatures (min 150 °C/300 °F); EPDM when in contact with steam;

• AISI 304 support frame;• model SA0*: insulated AISI 304 pipes

with nozzles.


ultimateSAM ultimateSAM single pipe

SAB*, SAT* SA0*

The ultimateSAM system can use both steam from a pressurised distribution network or from a generator at atmospheric pressure (humidifier). When supplied by a pressurised steam line, the fluid reaches the distributor via a regulating valve, which expands the steam until almost atmospheric pressure.When steam is supplied at atmospheric pressure, no valve is fitted between ultimateSAM and the steam generator, with steam flow-rate being modulated based on demand and managed directly by the humidifier.To minimise condensate formation, the steam distribution pipes have been designed with baffles and nozzles that ensure only dry steam is delivered into the AHU/duct. ultimateSAM can be ordered with insulated upright distribution pipes, featuring a cushion of air that reduces both heat gain and condensate formation.On insulated distributors, the nozzles pressed into the pipes take dry steam from the centre of the distributors so as to prevent the release of condensate into the air stream. On the other hand, if the uprights are not insulated, no nozzles are fitted. Insulated models with nozzles reduce condensate formation by 30% compared to non-insulated models. In both cases, naturally, a short not-wetting distance is guaranteed (around ½ a metre).

This can be used with pressurised steam or steam at atmospheric pressure. The manifold in this case also acts as a steam trap, being fitted with a baffle on the inside, as well as ensuring condensate drainage. The single-pipe version comes with insulation and nozzles to reduce condensate formation and non-wetting distance.Accessories available for the single-pipe version:• SAKC*S10*0: condensate drain hose kit;• SAKC0*T0*0: condensate drain T

connection kit• SAKD0*10*0 and SAKD0*20*0: steam

inlet kit for double-pipe version.

Accessories

Modulating valves (SAKV*)

Modulating valves with electric actuator and automatic safety closing in the event of power failures: the modulating valves control steam flow-rate based on a signal from an external controller; this is required for systems supplied by pressurised steam.

Steam inlet connections (SAKI*)

The ultimateSAM humidification system includes a variety of steam inlet adapters, so as to offer maximum installation flexibility. All the adapters are made from stainless steel and are sized for easy connection to all the other components in the system.

Y strainers (SAKT*F*)

These remove any type of impurity that may be entrained in the piping, preventing these from reaching the distributor

Steam traps and condensate drains(SAKT*P*, SAKT*D*, SAKT*B*)

These are integral parts of a steam distribution system, both supplied with pressurised steam or steam at atmospheric pressure. The steam trap + condensate drain assembly prevents condensate from forming in the supply line to the valve and steam dispersion system.

Condensate drain T connection kit(SAKC*S10*0) for models SA0*

Stainless steel condensate drain connector for single-pipe models. Used to drain condensate from the pipes and manifold.

49

Spare parts

Distribution pipes (SAKU*)

Spare distribution pipes are sold in kits including:• the distribution pipe;• 1 O-ring;• bolts to fasten the distributor to the

horizontal manifold.

Distribution manifolds (SAKM*, SAKMS*, SAKMD*)

Each SAKMS*00 kit for SAB* and SAT* contains only the horizontal steam distribution manifold; gaskets are not included, as the existing ones are used.Each SAKMD*00 kit for SAT* contains:• horizontal condensate collection manifold;• gaskets for connection to the upright

distributors.Kit SAKMSA00*0 kit for SA0* contains:• manifold;• gasket;• fastening bolts.

Metal support structure parts(SAKF*, SAKS*) (for models SAB*/SAT*)

SAKS**0000: top and bottom supports for installing ultimateSAM in duct/AHUSAKFB00000: top corner for ultimateSAM SAB* for assembling the support frame (the kit includes the fastening bolts).SAKFR*0000: locking rings for securing the uprights to the ultimateSAM SAB*.SAKFF0*000: frame shoulder and top side of the frame for the ultimateSAM SAB*.

Gaskets (SAKG*) (for models SAB*/SAT*)

Each kit contains:• 2 O-rings;• 2 gaskets for condensate drainage.

ultimateSAM table

Features SAB* (bottom steam feed) SAT* (top steam feed) SA0* (horizontal single-pipe version)

Insulation for energy and water savings air cushion upon request air cushionCapacity kg/h (lbs/h) 20 to 370 (44 to 814) 60 to 1100 (132 to 2440) 20 to 140 (44 to 309)Steam pressure - bar (Pa) from around 0.01 bars (1000 Pa) to 4 bargDuct width (mm) 497 to 3081 383 to 2055Duct height (mm) 623 to 3206 min 300Material AISI 304 stainless steelCertifi cation ETL certifi cation


A

C

B

Model AxBxC weightSAB* 447x135x598 / 3031x135x3030 (17.60x5.31x23.54 / 119.33x5.31x119.29) in

152 mm steps7.5 to 202.5 (17 to 446)

SAT* 447x135x749 / 3031x15x3181 (17.60x5.31x29.49 / 119.33x5.31x125.24) in 152 mm steps

10 to 213.5 (22 to 470)

SA0* pipe length 383 to 2055 mm (15.08-80.90) in 152 mm stepsB=C= 160 mm (6.30)

4to 8.81 (8.7 to 19.4)


S A _ _ _ _ _ _ _ 0

Unit code

width:A= 447 mm (18”)B= 599 mm (24”)

...R= 3031 mm (120”)

(in case of sinlge pipe SA0 only from “A” to “L” size)

support frame:0= without frame, disassembled1= without frame, assembled2= with frame, disassembled3= with frame, assembled(in case of sinlge pipe SA0 only “0” value)

pipe type:S= ø 35 mm, step 152 mmL= ø 45 mm, step 152 mmH= ø 35 mm, step 76 mm(in case of sinlge pipe SA0 only “L”)

width:A= 598 mm (24”)B= 750 mm (30”)...R= 3030 mm (120”)(in case of sinlge pipe SA0 only “A” size)

pipe insulation:I= with insulationN= without insulation(in case of sinlge pipe SA0 only “I”)

market:U= North America0= others market

tipo:B= less steam inletT= top steam inlet

0= single tube

OVERVIEW DRAWING ultimateSAM

application with steam under pressure

coondensate drain manifold

manifold

pipe

pipe

electrical actuator

fi lter

SAKV0F*: valve

condensate drain

steam inlet

to ultimateSAM steam inlet

to ultimateSAM steam inlet

steam inletsteam inlet

steam humidifi er

application with steam at atmospheric pressure

support frame

SAB*: distributor with bottom feed SAT*: distributor with top feed SA0*: single horizontal pipe

SAKC*S10*0: condensate drain hose kit (optional) SAKC0*T0*0: condensate

drain T connection kit (optional)

51

CH

UE UR

UGCH

UE UR

UGCH

UE UR

UG

CH

UE UR

UG

CH

UE UR

UG

CH

UE UR

UG

CH

UE UR

UG

AccessoriesThese accessories are available for the humiSteam, compactSteam, heaterSteam and gaSteam humidifiers.The CAREL range of accessories for isothermal humidifiers have been especially developed to allow designers to create humidification systems that are complete and suitable for all types of application.

Steam blowers(VSDU* and VRDX*)

The steam blowers for rooms (VSDU0A0002) are suitable for humidifiers up to 18 kg/h. The steam blower can be fitted directly onto the humidifier, or in a remote position. In the latter case, a support is required for mounting the blower (VSDBAS0001), as well as a steam hose to connect the blower to the humidifier. The steam blower works in ON/OFF mode, and is controlled by a temperature device that is activated when steam is produced.

For humidifiers larger than 18 kg/h, the VRDXL00000 steam blowers are available, with 230 Vac power supply.The VRDXL0000 distributors are designed for installation in a remote position from the humidifier, and require two 30 mm diameter steam hoses. Both models of steam blowers are designed to drain condensate using a 7 mm diameter hose (see below).

Steam distributors for ducts (DP***D**R*)

The wide range of linear steam distributors for ducts in the “DP” series is made up of perforated stainless steel pipes supported by a fastening bracket made from Ryton®. This material combines excellent mechanical characteristics with extraordinary resistance to high temperatures.The new fastening bracket allows the steam distributor to be fastened vertically to a wall, guaranteeing the correct incline of the distributor for draining condensate.The stainless steel linear steam distributors are available in 3 different diameters (35, 45 and 60 mm), which couple respectively to the 22, 30 and 40 mm diameter steam hoses used on the entire range of CAREL humidifiers.These distributors are designed to release steam in a uniform manner along the entire length, so as to minimise non-wetting distance.

Fittings and connectors (UEKY******)

If the humidifier steam outlet lines need to be branched, two stainless steel Y connectors are available, one with 40 mm inlet and two 30 mm outlets (UEKY000000), and one with 40 mm inlet and two 40 mm outlets (UEKY40X400).

Steam nozzles (SDPOEM00**)

A range of steam nozzles is also available for distributing steam into small ducts or steam baths (SDPOEM0012 for models from 1 to 3 kg/h, SDPOEM0022 for models from 5 to 18 kg/h, SDPOEM0000).

Steam hoses(1312360AXX - 1312365AXX - 1312367AXX hose for cylinders with 22/30/40 mm fitting and harmonic steel coil - outside diameter 32/41/52 mm).

The steam distribution hoses are made from rubber resistant to 105 °C in continuous operation without the emission of odours, and suitable for use with foodstuffs. The harmonic steel coil immersed in the rubber gives the hose flexibility and strength, preventing it from being choked and blocking the flow of steam.

Fill hosesFWHDCV0000: water fill kitFWH3415000: hose L=1.5 mFWH3430000: hose L=3 m9997*ACA: straight and elbow quick connector1312350APN: hose with 6 mm ID and 8 mm OD.

The FWHDCV0000 kit includes the FWH3415000 hose and a double non-return valve. The kit has been designed both to ensure conformity to standards that require the use of a double non-return valve upstream of the humidifier (WRAC), and to avoid breakages of the fill valve due to direct connection to metal mains water pipes. The plastic fill solenoid valve may be damaged if connected directly to metal mains water pipes: using hoses with plastic fittings, FWH3***000, eliminates this risk.The FWH3***000 hoses are available in two lengths: 1.5 m and 3 m, with two ¾” female GAS connectors (one straight and one elbow). Alternatively, the 6 mm hose and the quick connectors described below can be used. The straight or elbow connector (999572*ACA) is screwed onto the fill solenoid valve and can be quickly fitted by tightening a nut to the 6 mm water fill hose (1312350APN).

Condensate drain hoses1312353APG: 7 mm, 1312368AXX: 10 mm, 1312357APG: 40 mm (1 m lengths)

The condensate that forms inside the steam distributors must be drained using the 7 mm hose for the steam blowers, and the 10 mm hose for the “DP” linear distributors for ducts.The water drain hose is the same for all isothermal humidifiers and is made from rubber resistant to 100 °C.

The fundamental idea is to guarantee optimum operation of the humidification system by providing the installer, maintenance personnel and user all the auxiliary components that simplify installation, steam distribution, operation and control of the humidifier.

The accessories, described in the following paragraphs, are divided into:• steam distribution accessories: steam

hoses and distributors, for rooms and ducts;

• plumbing components, for filling and draining the water;

• probes and external controllers (described in the chapter “Probes and control devices”).

Accessories

for special applications only*D

P035

D22

R0

DP0

45D

22R0

DP0

60D

22R0

DP0

85D

22R0

DP0

35D

30R0

DP0

45D

30R0

DP0

60D

30R0

DP0

85D

30R0

DP1

05D

30R0

DP1

25D

30R0

DP1

65D

30R0

DP0

85D

40R0

DP1

05D

40R0

DP1

25D

40R0

DP1

65D

40R0

DP2

05D

40R0

DP0

30D

22RU

DP0

30D

30RU

DP0

45D

30RU

DP0

60D

30RU

DP0

60D

40RU

inlet diameter (C)

22 mm 30 mm 40 mm 22 mm 30 mm 40 mm

length (A) 350 450 600 850 350 450 600 850 1.050 1.250 1650 850 1.050 1.250 1.650 2050 300 300 450 600 600CH001 - CH005 1 1 1 1 1UE001 1 1 1 1 1UE003 1 1 1 1 1UE005 1 1 1 1 1 1 1 1 1UE008 1 1 1 1 1 1 1 1UE009 1 1 1 1 1 1 1UE010 1 1 1 1 1 1 1 1UE015 1 1 1 1 1UE018 1 1 1 1UE025 2* 2* 2* 2* 1 1 1 2** 1UE035 2* 2* 2* 2* 2** 1 1 1 1 1UE045 230 V 3-phase

2 2 1** 1** 1** 1**

UE045 other voltages

2** 2** 1 1 1 1

UE065 4** 2 2 2 2 2UE090 4** 4** 2 2 2 2UE130 4 4 4 4 4

UR002 1 1 1 1UR004 1 1 1 1 1 1 1 1 1UR006 1 1 1 1 1 1 1 1UR010 1 1 1 1 1 1 1 1UR020 2* 2* 2* 2* 2* 1 1 1 2* 2* 1UR027 2* 2* 2* 2* 1 1 1 2* 2* 1UR040 2** 2** 1 1 1UR060 4** 2 2 2 2

UG045 2 2 2 2 2UG090 4** 4** 2 2 2 2UG180 4 4 4 4

Note: the quantities with asterisks require branched connections*: use CAREL “Y” kit P/N UEKY000000, 40 mm (1.6”) inlet and 2 x 30 mm (1.2”) outlets**: use CAREL “Y” kit P/N UEKY40400, 40 mm (1.6”) inlet and 2 x 40 mm (1.6”) outlets***: not recommended for use in normal applications

Table for choosing duct steam distributors

Adiabatic humidification

55

Pressurised water humidifiers

Pressurised water humidifiers exploit the potential energy transferred to the water by a special volumetric pump in the form of high pressure (generally 70 bars), so as to achieve very fine atomisation through special nozzles.The most common application of these humidifiers is in AHUs, where the pressurised water distribution system is installed. In industrial environments for processing wood or paper, or in the textiles industry, systems are often used to distribute atomised water directly into the rooms.As well as humidity control, pressurised water atomisers are the best solution for fully exploiting the potential offered by evaporative cooling, both direct and indirect, inside AHUs or in rooms, as in the case of industrial facilities and large public spaces, such as metropolitan railway stations and airports.One crucial aspect is the hygiene that pressurised water humidifiers must guarantee in the application where they are used. Management of washing cycles, the materials used and the configuration of the atomised water distribution system are the main features that guarantee CAREL humidifiers comply with the strictest hygiene regulations in force (VDI6022).

humiFog multizone represents the new generation in high pressure atomised water humidifiers. A volumetric pump sends water at high pressure to a distribution system made up of nozzles that atomise the water into very fine droplets, which can be absorbed by the air in a very short space.

Energy savingThe only energy humiFog consumes is used to power the water pump, just 4 watts for every l/h of capacity. Cooling in summer is provided by lowering air enthalpy, while humidification in winter has the advantage of being able to use thermal energy at low temperature. Power consumption is thus minimised. In addition, an inverter is used to modulate pump speed, meaning both more precise control and even lower power consumption.

Benefits• very low power consumption:

consumes just 4W per l/h capacity, less than 1% of any steam humidifier.

• summer/winter operation: humidifies the air during winter, cools the air in summer by direct and indirect evaporative cooling.

• choice of models available: single zone or multizone to best satisfy different requirements.

• high capacity: standard models are

available with capacities from 100 to 600 kg/h and custom models up to 5000 kg/h.

• maximum hygiene: suitable for all applications that require a high level of hygiene.

• “silicon free” version available with steel pump for painting applications.

Winter/summer operationThe winter/summer function allows classic air humidification in winter, while in summer humiFog is used to evaporatively cool the inlet air. The air is cooled due to spontaneous evaporation of the droplets of water: the change in state (from liquid to vapour) absorbs energy from the air, which by transferring sensible heat to the water is cooled. 100 kg/h of water absorbs 68 kW of heat from the air when evaporating.


UA*H*, UA*Z*

humiFog multizone

Single-zone/multi-zone configurations The humiFog system can be used in the following configurations:

Single zonefor applications in AHUs, the pump operates at variable pressure with flow control, for precise and continuous modulation of humidification capacity.

Multizonefor applications in AHUs and in rooms, in which a pumping unit (master) supplies multiple distribution systems (up to 6). Water pressure is kept constant (70 bars), capacity is modulated in steps. The multizone configuration rationalises the use of the humiFog pumping unit as, despite the lower precision due to stepped modulation (±5% against the ±2% guaranteed by the single zone solution), it can manage multiple zones at the same time, without having to install a pumping unit for each AHU or industrial environment.Direct humidification into rooms: humiFog multizone is the ideal system, as by keeping water pressure high (70 bars), each nozzle generates a cone of very fine droplets (average diameter 10 to 15 µm) that evaporate completely in a short time and space. The air temperature and humidity conditions, together with the presence of objects, may represent limits that must be considered in the installation to prevent the droplets from wetting objects, machinery and people in the room. When these limits are not satisfied, blowers can be used that, due to the cushion of air generated by the built-in tangential fan, carry the droplets of water in a substantially horizontal trajectory.

zone controller controllerspumping unit

Hygiene aspectsCertification in accordance with the latest European standards (VDI6022) make humiFog for AHUs suitable for all applications, including the most demanding as regards hygiene, such as hospitals. humiFog does not use chemical biocides but rather pure and simple water. Combining humiFog with reverse osmosis demineralisation and the UV lamp disinfection system guarantees maximum hygiene of the supply water. HumiFog does not atomise recirculated water: the built-in controller automatically fills the water lines only when humidification is required. At the end of the humidification cycle, all the lines are emptied to avoid stagnation of water in the system. In the event where there is no humidification demand for an extended time, automatic periodical washing cycles are activated on the water lines. All the components in the distribution system in contact with water are made from AISI304 stainless steel.

Supply water characteristicsFor correct operation, the humiFog multizone system should be supplied with demineralised water (with conductivity between 0 and 50 µS/cm). To reach these values, a reverse osmosis system is usually required. This treatment involves having the water pass through a special membrane that, being permeable only to molecules the same size as H2O, eliminates almost all the mineral salts present. As well as representing a physical barrier to bacteria, reverse osmosis water treatment removes mineral salts, and limits maintenance requirements inside the duct to simple periodical inspections!

System composition • Pumping unit with continuous pump

modulation (by inverter);• Fibreglass or stainless steel mist

eliminator for hygienically certified installations;

• Zone controller (for multizone version);• High pressure connection pipes.• Water treatment system (reverse

osmosis).

ControllersSimple and intuitive user interface

A large display shows easily understandable messages even for users without detailed knowledge of the product

The user interface is available in 5 languages (Italian, English, French, German and Spanish) while the menus can be browsed simply using the buttons with icons.

57

Blowers for all types of environment (DL*)

This consists of a tangential fan located behind a manifold with nozzles. The tangential fan generates a flow of air that assists evaporation of the droplets and the sustains the droplets with a cushion of air, so as to produce an essentially horizontal trajectory.The entire assembly is enclosed in a metal structure that also contains the on-off and solenoid drain valves, controlled by the pumping unit.The blowers have capacities that reach 32 kg/h! The “Master” version, with a built-in pressure switch, can independently manage the on-off and drain solenoid valves.Multiple blowers can be connected in series to make up a complete distribution line.

Room distributors(UAKC*FP*)

These consist of stainless steel manifolds (pipes) with fittings for nozzles that are installed inside the room being humidified/cooled. The manifolds are available in various models, to fit nozzles from one side only or on two opposing sides. A series of manifolds make up a line in the distribution system. The stainless steel manifolds are 2450 mm long, with an outside diameter of 16 mm.Each distribution line can be connected directly to the pumping unit or shutoff by a solenoid valve. By controlling these solenoid valves, humiFog manages the capacity of the distribution system, thus obtaining stepped capacity modulation (up to 6 steps). Each line has a drain valve that is mainly used to quickly discharge the water pressure when the line stops atomising: when opening the drain valve, the pressure quickly drops from 70 to 0 bars and the line is emptied, preventing the nozzles from dripping. In addition, the drain valves are used for the periodical automatic washing cycles managed by humiFog. The on-off solenoid valves are made from stainless steel in the normally closed version, up to 100 bars, while the normally open valves open automatically at around 15 bars; both have 1/8” GAS F fittings.

Atomising rack made-to-measure for AHUs (RACK*)

Atomising rack made to measure for the AHU. This is made up of nozzle manifolds, atomising nozzles, manifold on-off valves, manifold drain valves, vent valve and the main drain valve. All the metal parts are made from stainless steel. The on-off solenoid valves control the number of nozzles that are open, while the drain and vent solenoid valves are used to empty the rack.

Certified mist eliminator for AHUs(UAKDS*, SPFR*)

The mist eliminator has the purpose of trapping the droplets of water that are not completely evaporated, so as to prevent them from leaving the humidification chamber. The eliminator is supplied in standard modules that can be assembled to cover the cross-section of the AHU.It is available in two versions: with fibreglass or AISI304 steel filtering material, the latter required for VDI6022 certified installations.Pressure drop is very low and, with air speeds up to 3.5-4m/s, various from 30 Pa when dry to around 70 Pa when wet.The structure of the mist eliminator is always in stainless steel, and guarantees fast and effective water drainage.

Solution for installation in AHUs Solutions for installation in rooms Accessories and options

Connection pipes and fittings (UAKT)

CAREL can supply hoses or stainless steel pipes for connection between the pumping unit and the rack or the room distribution system, as well as high pressure (up to 100 bar) compression fittings for stainless steel pipes.

Junction box (UAKDER*0000)

Junction box for the solenoid valves fitted on the atomising rack in the duct.Models available for 4 to 8 solenoid valves.

Pulsation damper The damper reduces peaks in pressure generated by the pump pistons so as to limit pulsation along the pipes and the distribution system. Recommended for high capacity systems starting from 200 kg/h.

Liquid Teflon (5024612AXX)

Liquid Teflon for high pressure water fittings, 100 ml package.This is used to seal the nozzles and all the fittings on the rack and the blowers pre-assembled by CAREL.


Multizone

Zone control

FieldB

us

T1H1 T2

H2

T3H3

T4H4

1

2

3

4a

4b 5

6

1

2

3

4

5

6

pumping unit and zone controller for humidification in winter

zone controller for cooling in summer

pressurised water line

a: rack for cooling in summerb: rack for humidification in winter

mist eliminator

heat recovery unit

Winter/summer operationThe winter/summer function allows air humidification in winter, while in summer humiFog is used to evaporatively cool the inlet air.

Direct evaporative cooling This extends the range in which free cooling can be used, by evaporatively cooling the inlet air, while always controlling the relative humidity set point (4b).

Indirect evaporative cooling This is applied to the exhaust air, which can be cooled by several degrees without limits in terms of humidity (the air is

Outside air Exhaust air Cooled out-side air Outlet air Cooling capa-

city*

T1 H1 T2 H2 T3 H3 T4 H4 P

WITHOUT evaporative cooling 35 °C 40% RH 25 °C 50% RH 29 °C 56% RH 31 °C 36% RH 58 kW

WITH evaporative cooling 35 °C 40% RH 18 °C saturation 25 °C 70% RH 28 °C 55% RH 100 kW

Additional capacity 42 kW

In the example shown in the table, the exhaust air is pre-cooled to 18 °C and then used by the heat exchanger to cool the outside air from 35 to 25°C, a decrease of 10 °C, without increasing absolute humidity.*: The cooling capacity is calculated based on an outside air flow-rate of 30000 m3/h, atomising 100 kg/h of water, and a heat recovery unit with an efficiency of 58%.

Example of operation with direct and indirect evaporative cooling

conditioned air

intake

discharged by the AHU), by flowing first through a cross-flow heat exchanger together with the inlet air. This pre-cools the fresh air, reducing the capacity required by mechanical cooling (chiller) to bring the air to the desired conditions, thus reducing power consumption. The efficiency of this solution depends on the heat recovery unit used, yet easily exceeds 50%!!! The humiFog multizone is perfect for these types of applications in AHUs.

59

Features UA100* UA200* UA320* UA460* UA600*

General

Rated capacity kg/h 100 200 320 460 600Power supply 230 V, 1 phase, 50 Hz or 208 V, 1 phase, 60 HzPumping unit power consumption (kW) 0.955 0.955 1.15 1.15 1.95Zone controller power consumption (kW) 0.28Operating conditions 1T40 °C <80 % RH non-condensingStorage conditions 1T50 °C <80 % RH non-condensingDegree of protection IP20Water fi ll

Connection G3/4”F (NPT3/4F for UL versions)Temperature limits 1T40 ºC / 34T104 ºFWater pressure limits (MPa) 0.3 to 0.8Total hardness (ppm CaCO3) 0 to 25Conductivity limits (µS/cm) 0 to 50 µS/cm (stainless steel pump) – 30 to 50 µS/cm (brass pump)Water outlet

Connection M16.5m DIN 2353 (G3/8”F) (NPT3/8F for UL versions)Water drain

Connection (Ø mm) Stainless steel pipe, OD 10 mm/ 0.4 inchNetwork

Network connection RS485; Modbus® (others upon request)Control

Control external signal, temperature or humidity control; additional temperature or humidity limit probe

Type of input signals 0 to 1 V, 0 to 10 V, 2 to 10 V, 0 to 20 mA, 4 to 20 mA, NTCCertifi cationHygiene certifi cation for generic air-conditioning applications

VDI 6022, page 1 (04/06), VDI 3803 (10/02), ONORM H 6021 (09/03), SWKI VA104-01 (04/06), DIN EN 13779 (09/07)

Hygiene certifi cation for hospital applications DIN 1946, part 4 (01/94), ONORM H 6020 (02/07)*, SWKI 99-3 (03/04)Certifi cation CE and ETL998 (pumping unit); ETL508A (zone controllers)

Features DL*Water inlet M12 x 1 maleWater outlets M12 x 1 male or TNF 6x8 for DLxxSDxxxx and DLxxMDxxxxOutlet fan power 230 Vac, 50 HzCapacity (kg/h) 5, 11, 16, 22, 32Air fl ow-rate 700 m3/h model with 4 nozzles, 1500 m3/h model with 8 nozzlesDimensions 850 model with 4 nozzles, 1500 model with 8 nozzles, 200x200 mmMaterial stainless steelNozzle capacity at 70 bars (kg/h) MTP0= 1.45 kg/h, MTP1= 2.8 kg/h, MTP2= 4 kg/hNozzle fi ttings 4 or 8Manifold connectors 1/4” G femaleManifold dimensions 2450 mm, Ø14 mmMaximum distribution line length (m) 50 m (contact CAREL for longer lines)

Models of blowers for rooms

Dimensions (mm) and weights (kg)

A

C

B

H

L W

Model AxBxC weight LxWxH weightUA*H* 1030x400x860 85 to 100 1100x455x1020 100 to 120UA*S* 515 19.5 605x255x770 21


U A _ _ _ _ _ 3 0 _

Pulsation damper:0= without damper

1= with damper

Unit code

Capacity:100= 100 kg/h200= 200 kg/h320= 320 kg/h460= 460 kg/h600= 600 kg/h

HD= single zone pumping station 230 V 50 Hz single phaseHU= single zone pumping station 208 V 60 Hz single phaseZD= multizone pumping station 230 V 50 Hz single phaseZU= multizone pumping station 208 V 60 Hz single phaseSD= zone control cabinet 230 V 50 Hz single phaseSU= zone control cabinet 208 V 60 Hz single phase

Material:0= brass1= stainless steel2= stainless steel silicone free

OVERVIEW DRAWING humiFog

single

duct applications

room applications multizone

water from reverse osmosis

water from reverse osmosis

main drain valve

main drain valve

water fi ll valve

air outlet

air inlet

blower

drain valves

drain valves

drain valves

drain valves

room probe

room probe

room probe

room probe

fi ll valves

fi ll valves

fi ll valves

fi ll valves

zone valve

zone valve

zone valve

zone controller

zone controller

zone controller

zone controller

zone controller

atomising nozzles

vent valve

high-pressure stainless steel or

rubber hoses

drop separator

module

drop separator

module

rack

rack

61

Compressed air and water atomisers

Compressed air humidifiers are the ideal humidification solution whenever a compressed air supply is available, as is the case in many industrial applications, even if humidification systems are often fitted with a dedicated air compressor.The humidifier essentially consists of a cabinet fitted with electronic controller that, using two independent connection pipe networks, supplies the spray nozzles with compressed air and water at the ideal pressure for instant operating conditions.The units can be installed inside an AHU or directly in the room where humidity needs to be controlled.The greatest advantage of these atomisers is the minute dimensions of the droplets produced and their thorough mixing in the compressed air that, due to its speed, distributes the aerosol in the room and consequently allows quick absorption.These units can therefore be readily used for direct cooling in rooms, and are ideal for the textile industry, wood and paper processing, and storerooms, where there is almost always a supply of compressed air.

mc multizone features an electronic controller that manages the supply of water and compressed air to the nozzles. Water atomisation is managed by an external control signal or, in the case of stand-alone control, so as to maintain the humidity/temperature set point.

The unit also manages a series of automatic cycles, such as nozzle cleaning and washing.

The system has the ability to control humidity independently in multiple zones (rooms, AHUs, cold rooms) using a master-slave layout. The layout has one master and multiple slaves (up to 5) connected in a pLAN. The master is fitted with a display for accessing the readings, viewing the status and messages on the master and slaves. The slaves have their own internal controller and can be set to continue operating even if connection to the master is interrupted.

The master slave configuration can be used for:• high capacity: applications in rooms

or ducts where more than 230 kg/h of humidification is required, and thus more than one mc cabinet. The control signals (probes, external signals, limit probe) are connected to the master only. The master and the slaves generate a humidification/cooling capacity that is proportional to demand and their capacity. This allows systems to be developed with a capacity up to 1380 kg/h;

• multizone applications: applications in multiple zones, rooms or ducts, each with its own humidity/temperature set point. All the parameters, status information and messages for all the

cabinets can be viewed and edited from the user interface on the master. Installations in large spaces can be divided into zones, each with their own humidity/temperature probe, using the multizone master slave system.

Automatic nozzle self-cleaning systemEach cabinet, master and slave, periodically activates a cycle for drying and cleaning the atomising nozzles. A special cleaning piston inside the nozzle is periodically pressed, by a spring, into the opening of the nozzle, removing any mineral salts and considerably reducing the need for cleaning.


MC*

mc multizone

UV lamp disinfection system and filters (MCKSUV0000, MCKFIL* and MCC*)

For optimum operation and to ensure maximum hygiene, a UV sanitising lamp and water filter are installed upstream of the cabinet. For the compressed air line, CAREL also provides a filter to trap any solid particles and an oil filter to remove any oil.

Nozzles and assembly kits(MCA* and MCK1AW0000)

AISI316 stainless steel nozzles are available with different capacities, however all with the same outside dimensions.

Model CapacityA 2.7 l/hB 4.0 l/hC 5.4 l/hD 6.8 l/hE 10 l/h

Compressed air consumption: each 1 kg/h of atomised water requires 1.27 Nm3/h of compressed air. Dripping is avoided thanks to the closing mechanism in periods of inactivity. The nozzle assembly kit includes the components required for assembly of a nozzle between a manifold in the water line and a manifold in the compressed air line, and is suitable for all types of mc nozzles.

Compressed air oil mist eliminator(MCFILOIL01)The eliminator is needed to trap any oil leaks from the compressor.

Compressed air filter(MCFILAIR01)

Installed before the mc multizone cabinet, this protects the nozzles against being clogged by particles contained in the compressed air line.

Pressure sensor at the end of the line (MCKPT*)

This is installed at the end of the compressed air line that supplies the nozzles. In this way, the controller can regulate air pressure to the optimum value (2.1 bars) at the nozzle that is furthest away, making up for pressure drop. This enormously simplifies setup of the installation, which will work perfectly right from the very first time.

Pressure gauge at the end of the line(MCKM*)

This has the same purpose as the pressure sensor at the end of the line, described above. In this case, the pressure generated by the cabinet can be adjusted manually so as to reach a pressure of 2.1 bars on the gauge at the end of the line. A pressure gauge is also available for displaying water pressure at the end of the line.

Drain valve at the end of the line(MCKDVWL*)

This is installed at the end of the water line that supplies the nozzles. In this way, mc multizone can empty the line when the unit is off and run the automatic periodical wash cycles. These procedures ensure a high level of hygiene by avoiding stagnated water in the line.

Accessories

Guaranteed hygienemc multizone ensures a very high level of hygiene, through:• automatic emptying of the water line

whenever the unit stops;• automatic periodical washing of the

water line during inactivity.

This prevents the nozzles from spraying stagnant water. In addition, an effective UV sanitising lamp can also be installed upstream of mc multizone; this shines UV light ON the flow of supply water, helping eliminate any biological contaminants such as bacteria, viruses, mould, spores and yeast that may be in the water.

Water quality for mc multizone systemsThe constructional and functional features of the mc multizone allow the use of untreated drinking water. Nonetheless, the quantity and quality of dissolved minerals affect the frequency of routine maintenance operations (periodical cleaning of the nozzles) and the quantity of mineral dust deposited by the droplets of water after these have completely evaporated. For best operation, demineralised supply water by reverse osmosis should be used. This is also specified by the main reference standards, such as UNI 8884, VDI6022 and VDI3803.

Compressormc multizone requires compressed air, provided by an external compressor, not supplied by CAREL. The volume of air at standard atmospheric pressure required to atomise one litre of water is 1.27 Nm3/h , compressed to a pressure between 4 and 10 bars.

63

Atomizing Humidi�cation System 2 3

4

1

Features MC060* MC230*Maximum humidifi cation capacity (kg/h) 60 230Power supply 230 Vac single-phase, 50/60 Hz / 110 Vac single-phase 60 Hz, 37…48 WOperating conditions 1T40 °C, 0 to 80% RH non-condensingStorage conditions -1T50 °C, 0 to 80% RH non-condensingDegree of protection IP40Water fi ll

Connection 1/2” G 1/2” GTemperature limits (°C) 1T50 °CWater pressure limits (MPa - bar) 0.3 to 0.7 - 3 to 7Instant fl ow-rate (l/h) 60 230Total hardness (ppm CaCO3) * 0 to 400Conductivity limits (µS/cm) * 0 to 1250Water drain

Connection TCF 8/10 or TCF 6/8 normal water model, TCF 8/10 demineralised water modelWater outlet

Connection 1/2” GWater pressure (MPa - bar) 0.035 + 0.01∆h - 0.35 + 0.1 ∆h (∆h: height diff erence in metres between cabinet and nozzles)Air line

Connection 1/2” GTemperature limits (°C) 1T50 °CWater pressure limits (MPa - bar) 0.5 to 0.7 - 5 to 7Outlet 1/2” GAir pressure (MPa - bar) 0.12 to 0.21 - 1.2 to 2.1 (intermediate pressure values available only on modulating versions)Nozzles

Material stainless steel (AISI 316)Nozzle capacity at 2.1 bars (kg/h) 2.7 - 4.0 - 5.4 - 6.8 - 10Network

Network connection Modbus®, LON, TCP/IP, SNMP

(*) The mc system can operate on untreated drinking water. Nonetheless, the quantity and the quality of dissolved minerals affect the frequency of routine maintenance operations (periodical cleaning of the nozzles) and the quantity of mineral dust deposited by the droplets of water after these have completely evaporated. For best operation, demineralised supply water by reverse osmosis should be used. Softened water, on the other hand, should not be used as it does not reduce the concentration of mineral salts. In any case, observe the provisions of the UNI8884 standard ”Characteristics and treatment of the water in cooling and humidification circuits”, according to which the main water characteristics are conductivity < 100 µS/cm and total hardness <5 °fH (50 ppm CaCO3). Similar recommendations are also provided by VDI6022 and VDI3803.

1

2

3

4

Cabinet: available in various models, according to maximum capacity, type of control (ON/OFF or modulating), type of supply water, master/slave and power supply.

Nozzles: as well as the special atomising nozzles, assembly kits are also available for installing each nozzle.

Mist eliminator: with fibreglass or AISI304 filtering mesh (the same used for humiFog).

Manifolds: stainless steel manifolds are available for installation in the ducts where the atomising nozzles are installed. Manifolds and lines for installations in rooms are not supplied.


OVERVIEW DRAWING mc multizone

Probes

MCK1AW0000: nozzle assembly kit

MCA: nozzles

Air supply

Water supply

MCFILAIR01: air fi lter

MCFILOIL01: oil separator

MCFILWAT05: water fi lter




MCKUV00000: UV sanitising lamp

MCKM*: pressure gauge at end of line

MCKPT*: pressure sensor at end of line

MCKDVWL: drain solenoid valve at end

of line

valve

M C _ _ _ _ _ _ 0 _

M= masterS= slave

D= 230 V1= 110 V

Unit code

modulation:H= modulating/proportionalC= ON/OFF

capacity:060= 60 kg/h

230= 230 kg/h

type of water0= mains water1= aggressive water

Dimensions (mm) and weights (kg)

A

C

B

H

L W

Model AxBxC weight LxWxH weightMC* 515x165x580 19.5 605x255x770 21

65

Ultrasound humidifiers

Ultrasound humidifiers feature a small water storage tank and piezoelectric transducers installed at the bottom of the tank.The surface of the transducer oscillates at a very high speed (1.65 million times per second), so as to prevent the water from moving (the water cannot keep up with the oscillations of the transducer) due to its mass inertia. As a consequence, a column of water is generated above the transducers. During the negative amplitude of the transducer, an instant vacuum is produced because the water cannot follow the very fast transducer movements. The cavity created allows the production of bubbles, which are pushed to the edge of the water column during the positive amplitude phase, where they collide. During this process, very fine particles of water are atomised on the edge of the column of water. Due to the sound waves, cross waves are produced directly underneath the surface of the water, in the centre of which very small water droplets are separated thus generating a mist, which is absorbed immediately by the air stream.

Ultrasound technology applied to air humidifiers is an efficient and versatile solution:• it is efficient because ultrasound

humidifiers guarantee high energy saving (>90%) if compared to common

steam generators.• it is versatile thanks to the dimensions

of the droplets produced (average diameter of 0.005 mm). This fundamental feature guarantees rapid absorption of the atomised water in the surrounding area, thus preventing possible condensation.

humiSonic is the new ultrasound humidifier developed by CAREL. It has been developed to control and maintain the desired level of humidity for a specific environment constant. humiSonic, installed on fan coils, is the ideal solution for coupling accurate control of ambient humidity with common temperature control (guaranteed by the fan coils). The combination and accurate management of these two fundamental features of the air assure that comfortable conditions in the home or commercial environment can be reached and maintained.

The forced ducting system, installed between the coil and the air outlet, easily manages to evenly distribute the mist in the fan coil outlet duct.By supplying humiSonic with a humidity probe and flow sensor (TAM), a complete solution is obtained that can operate completely independently!

Advantages• significant energy saving;• easy installation and maintenance;• safe and guaranteed hygiene;• accurate ambient humidity control.


humiSonic for fan coil

UU*

humiSonic, installed on fan coils, is the ideal solution for coupling accurate control of ambient humidity with common temperature control (guaranteed by the fan coils). The combination and accurate management of these two fundamental features of the air assure that comfortable conditions in the home or commercial environment can be reached and maintained.

Energy savingUltrasound humidification is adiabatic, requires very low power consumption compared to steam solutions (40 W to atomise 0.5 kg/h of water). This important feature makes humiSonic an “Energy Saving” solution in line with modern energy saving expectations.

Easy installation and maintenanceThanks to the compactness of its design humiSonic is easy to install in new generation fan coils and at the same time can be retrofitted on existing units!The maintenance of humiSonic consists only in periodic replacement of the transducers (once a year) and, thanks to the ergonomic design, this does not have to be performed by trained staff.

HygieneThis is one of the main strong points of humiSonic and is guaranteed by three important characteristics:• washing cycles are carried out

periodically (even if humiSonic is in stand-by) thus preventing accumulation of dirt inside the tank;

• the drain valve ensures the humidifier empties completely once the humidification cycle has ended, also in the event of a power failure.

• the tank (made from plastic) also features silver ions, which are able to prevent proliferation of bacteria.

Complete solutionAs humiSonic is fitted with an integrated control board, no external electric control board is required. The humidifier receives the power supply from the transducer (supplied complete with cable kit) while as a control signal it can be connected to a voltage-free contact (ON/OFF), be managed by the integrated micro probe (available as an accessory) or can be controlled via serial network with Modbus® or CAREL communication protocol. By installing an optional card, humiSonic can be managed with an external signal (e.g. 0 to 10 V, 4 to 20 mA…) or with other active probe models.

Supply waterhumiSonic operates with demineralised water.Whenever normal water is used, the life span of the transducers will be decreased; in particular, the more mineral salts the water contains the shorter the maintenance interval for cleaning or replacement of the transducers.

Accessories

Dedicated humidity probeHYHU000000

The humidity probe (supplied as an optional component) must be installed in the fan coil air intake circuit. humiSonic compares the value of the humidity present in the environment (measured via probe), against the set point and consequently modulates the production of mist in order to maintain the desired value. The small size of the probe (Ø= 20 mm L= 71 mm) simplifies installation inside the fan coil.

Flow sensorUUKTA00000

The flow sensor can perform the important remote ON/OFF function and must be connected to the fan coil fan neutral wire.On measuring current, the flow sensor will enable or disable production of mist. In this way, the humidifier will only operate when the fan coil is running, irrespective of ambient conditions.

67

Features UU01F*0 UU01F*A0

Mist production 0.5 kg/h - 1.1 lb/hMist outlet Ø= 40 mmSupply water inlet G 1/8” FSupply water temperature from 1 to 40 °C - from 33.8 to 104 °FSupply water pressure from 0.1 to 6 bars - from 14.5 to 87 psiFill fl ow rate 0.6 l/minSupply water Demineralised (the use of mains water does not compromise correct operation of

humiSonic, however, reducing the life span of the piezoelectric actuators, it means that routine maintenance operations must be more frequent).

Drain water outlet 10 mmDrain fl ow rate 7 l/minPower 40 WPower supply voltage mod. D= 230 V 50 Hz, mod. 1= 115 V 60 HzCurrent draw 0.5 APower cable section 1.5 mm2

Dimensions 125x121x221 mm (4.92x4.76x8.70 inch)Control signalsON/OFF enabling

HYHU000000 humidity probe (to be installed in the fan coil intake line)

UUKTA00000 fl ow sensor to be connected to the neutral wire of the fan coil power supply.

BMS Serial (CAREL or Modbus® protocol).

Signal from active probe

External control signals (0 to 10 V, 4 to 20 mA)

standard optional

Display and optional cardUUKDI00000, UUKAX00000

With the optional card, humiSonic can: • be connected to the display; in this way,

access is available to the list of parameters in order to optimise the configuration of humiSonic and adapt it to particular application requirements.

• receive a signal from an external controller (0 to 10 V, 2 to 10 V, 0 to 20 mA, 4 to 20 mA) or from an active probe.

Distribution systemThe distribution systems offered as an accessory allow easy and safe installation.The kits are made up of a part in flexible plastic measuring 700 mm in length (to be connected to the humiSonic manifold) and a part in stainless steel to be installed between the coil and the fan coil outlet grill, available in three lengths: 250, 530 and 600 mm.

humiSonic table


U U 0 1 F _ _ 0 0 _

Unit code

fl ow rate:01= 0.5 l/h

packaging:0= individual1= multiple

voltage:D= 230 V 50 Hz1= 110 V 60 Hz

application type:F= fan coil

optionals:0= noneA= auxiliary card

OVERVIEW DRAWING humiSonic

Modbus®/CAREL

UUKTA00000: fl ow sensor (TAM)

reverse osmosis system

mains water HYHU000000: humidity sensor

UU01F*: humiSonic for fan coil

transformer (included in the humiSonic UU01F*)

Dimensions in mm (inch) and weights in kg (lbs)

A

C

B

H

L W

Mod. AxBxC weight LxWxH weightUU01F* 125x121x221 (4.92x4.76x8.70) 2,8 (6.17) 3,9 (8.6)

69

Centrifugal humidifiers

humiDisk is a small yet sturdy humidifier that uses a spinning disk to atomise water and transform it into millions of very small droplets that, blown by a built-in fan, are introduced into the environment, where they evaporate, humidifying and cooling the air.

Very low power consumptionhumiDisk is a simple, economic and easy to maintain humidification system, with an energy consumption of just 220 W for 6.5 kg/h of capacity (31 W for the 1.0 kg/h model).

Guaranteed hygieneThe water tank inside the humiDisk contains just 0.055 litres of water, which is atomised, at maximum capacity, in just 30s for the 6.5 kg/h model and 3 minutes for the 1 kg/h model. The water in the tank is therefore changed very rapidly, meaning the humidifier substantially works with non-stagnant running water, so as to guarantee the best hygiene conditions.

Adjustable capacity (humiDisk65 only)Operation of humiDisk65 controlled by an electronic board fitted with a trimmer for setting humidifier capacity, from 1.1 to 6.5 kg/h, making it suitable for all applications.

Automatic washing cycles (humiDisk65 only)The board, as well as managing normal unit operation, also performs a tank washing cycle when starting the unit, and an emptying cycle when humidification is no longer required. This avoids having stagnant water inside the unit.

Important: to ensure a higher level of hygiene, when using the CAREL electrical control panels, the humidifier also washes the water tank at the start of each humidification cycle.

Water usedhumiDisk can operate on both mains water or treated water. The quantity and quality of the minerals dissolved in the water affect the frequency of the routine maintenance operations and the amount of dust generated. For best operation, use demineralised water (do not use softened water, as this does not reduce the content of minerals dissolved in the water).In any case, observe the requirements of UNI8884 standard ”Characteristics and treatment of the water in cooling and humidification circuits”, according to which the main characteristics of the water are conductivity < 100 µS/cm and total hardness <5 °fH (50 ppm CaCO3). Similar requirements are also specified in standards VDI6022, VDI3803.

Benefits• Simplicity:

- requires just the 230 Vac power supply and the mains water and drain lines;

- operation is ON/OFF;• hygienically safe:

- very small water tank, just 55 ml; - washing procedure at unit start; - emptying at the end of the humidification cycle;

- washing procedure at the beginning of every cycle (with CAREL control panel only);

• modularity: 1 or 2 humiDisk65 units can be controlled in parallel using the special control panel, or up to 10 humiDisk10 units using the CAREL humidistat


UC*

humiDisk10 & humiDisk65

Applications• cold rooms, storage facilities and

ripening rooms for products, such as fruit and vegetables, where low humidity level causes weight loss and product spoilage;

• printing facilities, where the correct level of humidity must be maintained to avoid variation in paper size and consequent misprints; the correct humidity value reduces the probability of electrostatic discharges and adhesion of the sheets of paper;

• textile industries, where maintenance of the required humidity according to the production process and the type of material used is fundamental.

Assembly and accessorieshumiDisk can be wall-mounted or hung by chains from the ceiling.

humiDisk65 is complete with accessories for wall and ceiling mounting, as well as the water fill and drain hoses.

humiDisk10 is available in two versions:• with accessories for ceiling installation

only;• also complete with wall-mounting

bracket and water fill and drain hoses.

Electrical panels with electronic humidity controller(UCQ065D*00)

CAREL supplies electrical panels fitted with electronic humidity controller. By connecting a humidity probe to the controller, this can activate one or two humiDisk65, units, in parallel, so as to maintain the humidity level to the set value. The humidity measured by the probe can be read on the display of the controller. The humidity probe is not included in the electrical panel.

Humidistat(UCHUMM0000)

This simple and low-cost mechanical humidistat can be connected directly to one or more humiDisk units (up to a maximum of 10 units in parallel, for humiDisk10 or one humiDisk65). Used to set the desired humidity by simply turning the knob.

Frost protection device (humiDisk65 only)(UCKH70W000)

humiDisk65 can be supplied with an optional frost protection device: an electric immersion heater, controlled by the electronic board and a temperature sensor that is activated when the temperature inside the unit approaches 0 °C. The appliance can operate at temperatures down to around 1 °C without the frost protection device, and down to -2 °C with the device (optional). This is especially useful for applications in fruit and vegetable cold stores.

UV lamp disinfection system (MCKSUV0000)

To guarantee maximum hygiene, a UV sanitising lamp can be installed upstream of the humidifier. The lamp shines UV light on the flow of supply water, helping to eliminate any biological contaminants that may be present, such as bacteria, viruses, mould, spores and yeast.

Accessories

71

C C C

D D

A

BB

A

B

Positioning

humidifi er distance (m)A B C D

UC010 ≥2 ≥0,5 ≥1,5 ≥0,5UC065 ≥3 ≥1 ≥1,5 ≥0,5


A

C

B

H

L W

Model AxBxC weight LxWxH weightUC010 302x390x312

(11.89x15.35x12.28)4.3(9.48)

400x400x350(15.75x15.75x13.78)

5(11.02)

UC065 505x610x56519.88x24.01x22.24)

17.6(38.80)

640x600x66525.20x23.62x26.18)

20(22.24)

Features humiDisk10 humiDisk65

Capacity 1 kg/h at 230 V 50 Hz1.2 kg/h at 110 V 60 Hz 6.5 kg/h, adjustable from 0.85 to 6.5 kg/hPower supply 230 V, 50 Hz - 110 V, 60 Hz 230 V, 50 Hz - 110 V, 60 HzPower consumption 31 W 230 W - (290 W with frost protection device)Air fl ow-rate 80 m3/h (47 CFM) 280 m3/h (165 CFM)Water content 0.055 litres 0.055 litresOperating conditions 1T35 °C (34T95°F) 1T35 °C (34T95°F) WITHOUT frost protection

device

-2T35 °C WITH frost protection device (not available for American version)

0 to 100% RH non-condensing 0 to 100% RH non-condensing

Frost protection heater no yes (European version only)Degree of protection IPX4 IPX4Electronic board for capacity control

Electrical panel with electronic humidistat

Mechanical humidistat

Installation accessories accessories for ceiling-hung installation INCLUDED.Accessories for wall mounting and hoses NOT INCLUDED, available as options.

accessories for ceiling-hung AND wall-mounted installation and fi ll and drain hoses included.

Certifi cation CE and ETL CE and ETLFill connections Ø10 mm (OD) 3/4 GDrain connection Ø10 mm (OD) 3/4 GWater

Supply water pressure 100 to 1000 kPa 100 to 1000 kPaWater temperature limits 1T50 °C (33.8T122 °F) 1T50 °C (33.8T122 °F)Water total hardness limits (*) (**) max 30 °FH (max. 300 ppm CaCO3) max 30 °FH (max. 300 ppm CaCO3)Water conductivity limits (**) 100 to 1200 µS/cm 100 to 1200 µS/cm

(*) not less than 200% Cl- in mg/l(**) The quantity and quality of the minerals dissolved in the water affect the frequency of the routine maintenance operations and the amount of dust generated. For best operation, use demineralised water (do not use softened water, as this does not reduce the content of minerals dissolved in the water). Observe the requirements of UNI8884 standard ”Characteristics and treatment of the water in cooling and humidification circuits”, according to which the main characteristics of the water are conductivity < 100 µS/cm and total hardness <5 °fH (50 ppm CaCO3).

standard optional


OVERVIEW DRAWING humiDisk10

water supply

water drain

power supply

UCHUMM0000*: mechanical humidistat

MCKSUV*:UV sanitising lamp

U C 0 1 0 _ _ _ 0 1

type of heater:0= without antifreeze heater1= with antifreeze heater

Unit codesupply voltage:

1= 110 VD= 230 V

supply frequency:0= 50 Hz6= 60 Hz

PRGmute

SEL

OVERVIEW DRAWING humiDisk65

UCQ065D*: control panel

Probes

power supply

water supply

water drain



MCKSUV*: UV sanitising lamp

U C 0 6 5 _ _ _ 0 1

type of heater:0= without antifreeze heater1= with antifreeze heater

Unit codesupply voltage:

1= 110 VD= 230 V

supply frequency:0= 50 Hz6= 60 Hz

Evaporative cooling

75

Atomisers - evaporative cooling

“Evaporative Cooling” is the process in which water cools the air through evaporation. For this to happen spontaneously, without the contribution of external energy, the water must be atomised in the air as very fine water droplets which, having a lower surface tension than the surrounding air, evaporate into the air. Why does the air cool down?No contribution of external energy is necessary, however, owing to its nature, the water evaporation process requires a certain amount of energy. This energy is removed from the air itself which, in order to absorb the water must release sensible heat, thus lowering its own temperature. Every kilogram of water that evaporates absorbs 0.69 kW of heat from the air. This is how the dual humidification and cooling effect of the air is obtained through the Evaporative Cooling process, which in many air handling applications represent two desired effects.

Energy SavingThe rapid development of evaporative cooling in HVAC applications is surely due to its very low energy impact. If we compare the cost for energy regarding Evaporative Cooling with that of other types of air transformations (e.g. humidification with steam emission or air cooling via chiller), it can be seen that the energy saving is considerable. The only energy required is for water pressurisation,

which is sent to the atomiser nozzles by a pump. Consumption is about 4 to 8 W for every l/h of atomised water.

Optimist atomisersCAREL supplies a complete range of products that make use of the principles of evaporative cooling and all its advantages. The standard composition of these products is: • cabinet, containing the pump for

pressurising the water, an inverter and an electronic controller for modulating the production of atomised water instant by instant;

• atomiser nozzles, able to atomise the water into very fine water droplets (in the order of a few hundredths of a millimetre), extending the heat exchange surfaces.

• distribution system, composed of stainless steel manifolds, atomiser nozzles and drain valves, in order to guarantee emptying.

Advantages• energy saving: combines adiabatic

humidification and evaporative cooling in a single global solution for energy saving within the AHU.

• pressure loss management: optiMist guarantees real energy savings, assuring a very low pressure drop at the fans (30 Pa);

• controlled atomisation: in order to completely exploit the potential of evaporative cooling and without waste, it is necessary to have very accurate control of the amount of water atomised, instant by instant. By combining the action of the inverter and the modulation circuits, Optimist can precisely follow temperature and humidity demand;

• hygiene: thanks to the materials used, the design of the distribution systems without stagnation points and the automatic washing systems managed by the electronic controller, Optimist is a hygienically safe solution for adiabatic humidification and evaporative cooling within the AHU.


optiMist

EC**

optiMist is an evaporative humidifier and cooler that atomises water into very small droplets which, by evaporating spontaneously, extract heat from the humidified and cooled air. It uses an impeller pump to pressurise the water, atomising it successively through special nozzles.

The sophisticated control system combines the action of an inverter, which controls speed and therefore pump displacement, with that of 2 solenoid valves that activate only the nozzles necessary. This allows the system to always work at the best pressure for atomising the water, within a wide flow rate range.The cooling effect of the air is due to the spontaneous evaporation of the water droplets: the change of state from liquid to vapour takes place at the expense of the energy in the air, which cools down as a consequence.

optiMist is a complete system, which includes humidification and evaporative cooling in a single solution, and can be used to handle air in an AHU (air handling unit), and to humidify the flow air (direct evaporative cooling) and also for indirect cooling of fresh air, for example with a cross-flow heat recovery unit, so as to increase energy efficiency of the AHU.

System components• pumping station that pressurises the

water (4 to 15 bars): this also contains the electronic controller that completely manages the pumping station, controlling the temperature/humidity in each optiMist section. As it is fitted with an inverter and pressure probe, it can control the flow rate produced moment by moment, thus guaranteeing maximum accuracy and minimum energy and water consumption;

• distribution system: this is made up of stainless steel piping, fittings for compression joints, atomiser nozzles and drain valves (mechanical valves or

optional solenoid valves managed by the pumping station). optiMist can be coupled with a distribution system with twin modulation circuits for precise temperature and humidity control or, coupled with two distribution systems it becomes an integrated solution for the management of evaporative cooling (with a single pumping station, without the addition of electric control boards).

• droplet separator: necessary to prevent condensation in the AHU outside the sections dedicated to humidification or evaporative cooling. The optional drain structure also facilitates installation and successive maintenance of the droplet separator; the filtering modules are in fact removable from the front without disassembling the structure.

HygieneAll CAREL atomisers are designed following the VDI6022 standard guidelines. In particular, for the products that make use of evaporative cooling, the sophisticated electronic system that governs the distribution line drain solenoid valves prevents stagnating water from stopping in the piping; a main danger for the proliferation of bacteria. Automatic washing is also managed by the distribution lines at the time interval set by the user. All CAREL atomisers can be used (as further hygienic safety and to reduce maintenance) with dematerialised water.The installation of the optional UV lamp guarantees further cleaning and disinfection of the water entering the atomiser.

Supply water.Following the evaporation process, the mineral salts dissolved in the supply water are in part destined to deposit on the surface of the droplet separator.The nature and quantity of the mineral salts contained in the water determine the frequency of routine maintenance

operations necessary to remove said deposits from inside the AHU.In order to maintain the hygiene of the installation and to reduce system management costs, CAREL recommends to supply optiMist with demineralised water via reverse osmosis, as envisioned in the main standards such as UNI 8884:• conductivity <100 S/cm;• total hardness <5 °fH (50 ppm CaCO3);• 6.5<pH< 8.5;• chlorides content <20 mg/l;• silica content <5 mg/l;

If demineralised water is not available, softened water can be used. In this case, in order to limit aggressiveness, it is recommended to guarantee minimum hardness not lower than 3°f.CAREL recommends the use of mains water only if this has hardness lower than 16°f or conductivity lower than 400 µS/cm. The use of mains water will lead to routine maintenance operations (cleaning or replacement of the nozzles and the droplet separator), whose frequency depends on the chemical composition of the water itself.

77

Table of model features

Drain valves (ECKD*)

This is installed in the distribution system drain circuit in order to allow complete emptying. Thanks to these valves, periodic washing cycles can be planned automatically. These are very important for guaranteeing system hygiene. The ECKDSV0000 solenoid valves, controlled electrically by the optiMist cabinet or ECKDMV0000 mechanical valves, which open and close depending on working pressure can be used according to application requirements and the type of water used.

Drop separator for AHU/certified duct (UAKDS*, ECDS*)

The droplet separator has the purpose of capturing the droplets of water that have not completely evaporated to prevent them passing beyond the evaporative humidification/cooling section. It is supplied in easy-to-assemble modular panels to cover the cross-section of the AHU.The pressure drop of the droplet separator is very low, only 30 Pa with air speed of 3.5 m/s. The support structure of the droplet separator is always in stainless steel and guarantees quick and efficient draining of the water. The droplet separator can be supplied with glass fibre or stainless steel modules according to application requirements.

Differential pressure switchDCPD0*0*00

Device for controlling the differential pressure of the air for the droplet separator. The differential pressure switch allows continuous monitoring of the pressure drop on the fans in order to guarantee global energy saving within the AHU.

Flexible hose(ACKT*)

AISI304 stainless steel flexible corrugated hoses for connection of the pumping station to the distribution system. The following hose lengths are available: 1, 2 and 10 m.

Features EC005* EC010* EC020* EC040* EC080* EC100*

GeneralPower supply EC*0= 230 V, 1 phase, 50 Hz

EC*U= 230 V, 1 phase, 60 HzPower consumption 0.375 kW 0.75 kWCurrent 1.6 A 1.6 A 1.7 A 1.7 A 3.0 A 3.2 AOperating conditions 5 to 40 °C (34 to 104 °F) <80% R.H. non condensingWater supplymaximum fl ow rate 50 100 200 400 800 1000pressure 0.2 to 0.7 mPaconnection: EC*0= G3/4” f

EC*U= NPT 3/4” fWater drainconnection stainless steel coupling G3/4f ID, OD ~35 mm/ 1.18 inch.

Accessories and options


OVERVIEW DRAWING optimist

mains water

softened water water supply

demineralised water (recommended

choice)

EC*: optimist


A

C

B

H

L W

Model AxBxC weight LxWxH weightEC005*, EC010* 605x300x805 (23.62x11.82x31.50) 53 (117) 700x410x1020 (27.56x16.14x40.16) 56 (124)EC020*, EC040* 605x300x805 (23.62x11.82x31.50) 55 (121) 700x410x1020 (27.56x16.14x40.16) 58 (128)EC080*, EC100* 605x300x805 (23.62x11.82x31.50) 59 (130) 700x410x1020 (27.56x16.14x40.16) 62 (137)

E C _ _ _ D H 0 0 _

Unit code

ow rate005= 50 l/h

010= 100 l/h020= 200 l/h040= 400 l/h080= 800 l/h

100= 1000 l/h

power supply voltage0= 230 V 50 HzU= 230 V 60 Hz

79

ChillBooster

ChillBooster is made up of a pumping station and a water distribution and atomisation system:• an electrical panel for ON/OFF control of

capacity;• a pump power supply solenoid valve;• inlet water pressure switch;• an impeller pump with incorporated

pressure adjustment valve calibrated at 10 bars;

• outlet pressure gauge;• high temperature protection heating

valve;• drain solenoid valve for unit shutdown;• modular stainless steel manifolds with

20 mm diameter;• atomiser nozzles:• distribution system drain solenoid

valves, at line end; • corrugated steel flexible connection

hoses;• metal compression fittings;• UV system for cleaning and disinfecting

water inside the cabinet (optional).

The pumping station is available in two versions: stainless steel version for demineralised water (recommended), or version for normal water with brass pump.

Supply and top-up waterChillBooster can operate with untreated drinking water and with demineralised water.Following the evaporation process, the mineral salts dissolved in the supply water are in part destined to be transported by the flow of air as a very fine dust and in part deposited on the surface of the heat exchange fins or in the pipes.The problem is minimised with the use of demineralised water via reverse osmosis, as envisioned by the main standards, such as UNI 8884, VDI6022, VDI3803.

Applied to chiller/drycoolers, to limit the formation of deposits on the surface of the coils. Whenever untreated water is used it is recommended to limit the use of

AC100D*, AC050D*, AC010D*

ChillBooster only to when necessary and indicatively not over 200 h per year.

ChillBooster for chillers or drycoolersChillbooster cools the air before it is used by the unit for cooling the fluid in the coil. Atomisation takes place against the flow so that the droplets follow the longest route possible, in a way to have sufficient time to evaporate. The cooled air is extracted by the fans and therefore the heat exchange of the coil increases considerably! Part of the droplets will wet the coil fins: this water will tend to evaporate thus absorbing heat and contributing to the increase in capacity. Part of the water will fall onto the fins and must be drained.

ChillBooster allows liquid coolers and condensers to deliver rated capacity even in periods with high temperatures, which often coincide with maximum loads, without oversizing the systems.

pRackpRack manages Chillbooster for air condensers, maximising performance during high summer temperatures and minimising energy consumption.

Line end solenoid valve½” GAS brass or stainless steel solenoid valve, normally open for draining water due to inactivity.

Quick couplingsCompression fittings for unthreaded Φ20 mm pipes in brass or stainless steel.

NozzlesNozzles with capacity of 5, 7.5 or 15 kg/h at 10 bars.

ManifoldAISI304 stainless steel, Ø20 mm manifolds, with threaded holes for nozzles, available with 7 holes (1052 mm), 13 holes (1964 mm) or 19 holes (2876 m).

Flexible hoseAISI304 stainless steel corrugated flexible hoses.

Components


ChillBooster

4

3

2

1

ChillBooster tableFeatures AC010**** AC050D**** AC100D****

Flow rate (l/h) 100 500 1000Power consumption 0,4 0,5 0,6Temperature 5T40 °C (40-104 °F)Heat valve discharge connection pipe OD 10, ID 5Electrical features 230 V, 50/60 Hz (depending on the model)Certifi cation CEUV lamp duration (optional) 4000 hProtection rating IP55Water supply

Connection 1/2”G femalePressure (min.-max.) 3-8 bars, 0.3-0.8 Mpa, 40-115 PsiWater drain

Connection 1/2”G femaleOutput

Connection 1/2”G female

Supply water*

Conductivity <100 μS/cmTotal hardness <5 °fH (50 ppm CaCO3)

* see “Supply and top-up water”

Layout example for chiller or drycooler

Drain

Inlet water

1

2

3

4

pumping station, ON/OFF control

modular stainless steel manifolds;atomiser nozzles

distribution system drain solenoid valves

flexible connection pipes and metal fittings

81

Dimensions (mm(inch)) and weights (kg(lb))

A

C

B

H

L W

Model AxBxC weights LxWxH weightsAC*****0** 600x300x800 (23.62x11.82x31.50) 49 (108) 720x410x1020 (28.5x16x40) 52 (115)AC*****01* 600x300x800 (23.62x11.82x31.50) 53 (115) 720x410x1020 (28.5x16x40) 56 (125)AC*****K** 550x210x750 (21.65x8.30x29.53) 27 (60) 860x660x360 (34x26x14) 32 (70)AC*****K1* 550x210x750 (21.65x8.30x29.53) 32 (70) 860x660x360 (34x26x14) 37 (82)

ChillBooster

pGD1 user interface

BMSField-Bus

OVERVIEW DRAWING ChillBoosterACKNR*: nozzles

ACKT0*: manifold

water drain

ACKR*: push-in fi tting

ACKRT*: “T“ connector

ACKV*: drain solenoid valve

ACKT*: corrugated hose

ACKF*: water fi lter

WTS*: water from reverse osmosis

pRack: electronic controller

A C _ _ _ D _ _ _ _

Unit codeType of cabinet

0= complete cabinetK= version on backing plate

Type of pump0= for mains water1= for dimeneralised water

Capacity:010= 100 l/h050= 500 l/h100= 1000 l/h

Power supply frequency:0= 50 Hz1= 60 Hz

UV option:0= without UV sanitation1= with UV sanitation

Water treatment systems

85

Water treatment

The CAREL reverse osmosis water treatment system has been designed for use with humiFog multizone, mc multizone, heaterSteam and gaSteam humidifiers. The system can also be combined with the ChillBooster for evaporative cooling.

Supplied with mains drinking water, it generates demineralised water with physical/chemical, flow-rate and pressure characteristics suitable to supply the humidifiers.

The strong points of this product are its completeness (no storage tank or pumping system is required) and compact dimensions.

What is reverse osmosis?This is a technique in which the water being purified is pumped at high pressure and forced through a semi-permeable membrane with pores smaller than 0.001 µm in diameter: the majority of the dissolved ions are filtered by the membrane, thus producing relatively pure water. The removal of minerals, measured as a percentage of the original mineral content, may vary from 95% to 99% and even higher. Automatic operation and reduced operating costs (electricity required to pump the water) make the use of this technique quite extensive. Note however that reverse osmosis systems

are not ideal for treating water that is very hard and/or with significant quantities of contaminants: in these cases, to extend the operating life of the membrane, the water is pre-treated (filtering, deferrization, etc.).

Observations on water softeningReverse osmosis is a completely different treatment from water softening, which simply decreases the hardness of the water without removing the mineral salts, rather replacing “fouling” salts, such as calcium and magnesium, with sodium. Softening is therefore not recommended for use with adiabatic humidifiers. In addition, using softened water in isothermal humidifiers generates considerable amounts of foam and increases the risk of corrosion of the heating elements. In this case too, softened water is not recommended.

Why use demineralised water in humidifiers?Isothermal humidifiers (steam): to reduce maintenance and unit downtime, minimising accumulation of mineral salts and scale in the cylindersAdiabatic humidifiers (atomisers): to prevent scale in the nozzles, accumulation of mineral salts in air handling units (filters, mist eliminators) and avoid introducing mineral salts into the humidified rooms; to improve hygiene conditions in ventilation systems and reduce maintenance costs.

Limits on the maximum conductivity and hardness of water are specified by standards such as UNI8884, VDI6022, VDI3803, L8.

Benefits• easy maintenance/start-up: WTS is pre-

calibrated for simple and fast start-up. The automatic “flushing” procedure extends membrane life and reduces maintenance

• savings: by using a multi-stage centrifugal pump, WTS can deliver reverse osmosis water at the right pressure and flow-rate without requiring booster pumps and expansion vessels

• maximum hygiene: WTS provides reverse osmosis water only when required by the humidifier, thus avoiding storage. The water is also treated using the ultraviolet disinfection system.

Water treatment

water treatment system


1

1 7

23

4

5

6

CMR*

WTS

WTS contains all the components required for water treatment in just one, single optimised solution.

A typical reverse osmosis system consists of a frame housing the osmosis membrane, a storage vessel for the demineralised water and a pumping circuit to deliver pressurised water to the humidifier.

WTS, on the other hand, is directly controlled by the humidifier and produces demineralised water only when required. In this way, WTS doesn’t store water in the tank and doesn’t require a pumping circuit! As well as evident simplification of the system, absence of the storage tank ensures much better hygiene by avoiding stagnation of water and minimising maintenance.

The system consists of:• micrometric safety pre-filtering (to

remove ”impurities” from the water);• activated carbon dechlorination system;• descaler liquid dosing system;• electrical control panel;• high pressure main pump;• TFC reverse osmosis membrane;• UV sanitation system (on models for

adiabatic humidifiers).

All the components in the system are contained in a single skid to optimise costs, dimensions and simplify installation on site.

WTS must be commissioned and serviced by authorised CAREL personnel.

System commissioning is not included in the price and must be agreed upon in advance with CAREL.

Traditional installation, not optimised

Installation example

UV lamp disinfection system (MCKSUV0000)

To guarantee maximum hygiene, a UV sanitising lamp CAN BE installed upstream of the humidifier. The lamp shines UV light on the flow of supply water, helping to eliminate any biological contaminants that may be present, such as bacteria, viruses, mould, spores and yeast. Maximum flow-rate 240 l/h.

Antiscalant descaler liquid (CMROL00000)

25 kg container of descaler liquid. To guarantee perfect operation, the characteristics of the water must be provided in advance to CAREL, on a special form, so as to check compatibility with the treatment system. This information is usually available from the mains water supplier; often it is found free-of-charge on the supplier’s website.

Accessories

1

2

3

4

5

6

7

mains water inlet (water + mineral salts)

membrane

demineralised water

storage tank

generic points of use

drain water (concentrated mineral salts)

demineralised waterflow-rate and pressure guaranteed for CAREL humidifiers

Optimised CAREL solution

87


A

C

B

H

L W

Model AxBxCxD weight LxWxH weightCMRO*****0 970x603x1539x1469

(381.89x237.40x605.90x578.35)80(176.37)

120x80x175(4.72x3.15x6.89)

150(330.69)

FeaturesCMR*000090 CMR*000180 CMR*UV0320 CMR*UV0600 CMR*UV1200

for heaterSteam and gaSteam for humiFog, mc and ChillBooster

Maximum capacity of connected humidifi er (l/h)

90 180 320 600 1200

Ultraviolet sanitation system

Water fill

Water connection 3/4”Water inlet fl ow-rate (l/h) 600 100 600 1000 2000Water inlet pressure (bar) 2.5 to 4Concentrated water drain

Water connection 3/4”Water fl ow-rate (max) (l/h) 280 500 280 500 800Demineralised water outlet

Water connection 1”Maximum outlet fl ow-rate 5.3 l/min 10 l/min 320 kg/h 600 kg/h 1200 kg/h

WaterInlet water (*) mains drinking water, conductivity < 1000 µS/cmDemineralised water outlet conductivity of water produced ≤ 20 µS/cmRecovery factor 70%

(*) To guarantee perfect operation, the characteristics of the water must be provided in advance to CAREL, on a special form, so as to check compatibility with the treatment system. This information is usually available from the mains water supplier; often it is found free-of-charge on the supplier’s website.

standard

Table of WTS models

Water treatment

C M R _ _ _ _ _ _ _

Unit codeCapacity: 090= 5 l/min180= 10 l/min320= 320 kg/h600= 600 kg/h1200= 1200 kg/h

0= 50 Hz6= 60 Hz

00= without UV sanitation system, for heaterSteam and gaSteamUV= with UV sanitation system, for humiFog, mc and ChillBooster


ChillBooster

Atomizing Humidi�cation System

heaterSteam gaSteam

humiFog

mc

chillbooster

OVERVIEW DRAWING WTS

pre-fi lter and dechlorination

electrical control panel

UV lamp

CMROL0*: descaler liquid tank

reverse osmosis membrane

multi-stage pump

Sensors and protection devices

91


CAREL offers increasingly advanced and complete global solutions.

For this reason, CAREL has designed an entire range of probes that respond to the needs of HVAC/R installers and manufacturers, as well as for the control of CAREL’s own line of humidifiers.

The range envisions temperature and humidity sensors with different uses, housed in sockets, ducted, residential or industrial environment, pressure transducers, smoke, fire and flood detectors, air quality probes, gas leak detectors for refrigerant units, guaranteeing performance and compatibility with all CAREL controllers.

The range has been enhanced with the most innovative technological solutions, offering new international standards at increasingly competitive prices.

AdvantagesCAREL probes, as well as being characterised by the acknowledged performance that sets them apart, are very versatile and can satisfy various market requirements.

In fact, all the probes have been especially designed to be compatible not only with all CAREL controllers, but also with the most commonly used standards worldwide.

The temperature and humidity probes, offering a great choice between active and passive technology, are available in different operating ranges and also in specific versions for corrosive or polluting environments.

The pressure transducers are available in a ratiometric version, 0 to 5 V and 4 to 20 mA, also in a sealed version (to be installed without capillary directly onto the piping) offering improved performance in terms of precision.

The air quality sensors offer a new and important accessory to installers and manufacturers of AHUs, absolutely in line with CAREL quality.

The smoke/fire and flood detectors are small devices with auto-calibration function, thus adapting to different environmental conditions without losing activation accuracy.

For the detection of CFCs, HFCs and CO2 gas refrigerants, CAREL offers a range of sensors designed to satisfy requirements in the industrial refrigeration and air-conditioning for supermarkets, shopping centres, and other public places.


Temperature, humidity and temperature/humidity probes.

Active temperature/humidity probes

DPW*: for installation in the roomDPD*: for installation in the duct

This probes are particularly suitable for civil and commercial environments where particular attention is paid to design.They are used in heating and air conditioning systems that use ducts. The range also envisions models with RS485 connection with CAREL and Modbus® protocol.

Technical specificationsPower supply: 12/24 Vac -10/15%9 to 30 Vdc ±10%Operating conditions:• DPW*: -10T60 °C, <100% R.H. non cond.;• DPD*: -10T60 °C, -20T70, <100% R.H. non

cond.Protection rating: • DPW*: IP30;• DPD*: IP55, IP40 sensor.Assembly: • DPW*: wall-mounted;• DPD*: duct;Number of I/Os: • analogue outputs: -0.5 to 1 V, 0 to 1 V,

0 to 10 V, 4 to 20 mASerial Ports: RS485 (specific model)Dimensions: • DPW*: 127x80x30 mm;• DPD*: 98x105x336 mm.Connections: screw terminal board for cables up to 1.5 mm2

DPP*: for industrial environment

Specifically designed to measure high levels of humidity with great accuracy.The range also envisions models with RS485 connection with CAREL and Modbus® protocol.

Technical specificationsPower supply: 12/24 Vac -10/15%,9 to 30 Vdc ±10%Operating conditions: -10T60 °C, -20T70, <100% R.H. non cond.Protection rating: • IP55 (container); • IP54 (sensor).Assembly: wall-mountedNumber of I/Os: • analogue outputs: -0.5 to 1 V, 0 to 1 V,

0 to 10 V, 4 to 20 mASerial Ports: RS485 (specific model)Dimensions: 98x170x44Connections: screw terminal board for cables up to 1.5 mm2

Active immersion temperature probes

ASIT*: immersion

The ASIT* immersion probes are used in cases where it is necessary to measure the temperature inside cooling and heating circuits.They are particularly adaptable where the sensitive element must be in direct contact with the fluid being controlled.

Technical specificationsPower supply: 12/24 Vac -10/15%,9…30 Vdc ±10%Operating conditions: -10T70 °C, <100% R.H. non cond.Protection rating: • IP55 (container); • IP67 (sensor).Assembly: direct or with housingNumber of I/Os: • analogue outputs: -0.5 to 1 V,

4 to 20 mADimensions: 94x102x176Connections: screw terminal board for cables up to 1.5 mm2

active output temperature and humidity sensors

93

Active universal temperature probes

VOC, CO2, CO2+VOC air quality probes

Refrigerant gas leak detector

ASET*: universal

The universal temperature probes are used for many applications; in particular the ASET03* version has an electronic amplifier, protected by a container with IP55 protection rating, which allows remote control up to 2oo m with 4 to 20 mA output.

Technical specificationsPower supply: 12/24 Vac -10/15%,9…30 Vdc ±10%Operating conditions: -30T90 °C or 30T150 °C, <100% R.H. non cond.Protection rating: • IP55 (container); • IP67 (sensor).Assembly: directly in socketNumber of I/Os: • analogue outputs: -0.5 to 1 V, 4 to 20 mADimensions: 94x102x176Connections: screw terminal board for cables up to 1.5 mm2

DPWL*

The refrigerant gas detection sensor is a device that indicates leaks of the most common gases (R22, R134a, R404a, R407c, R410a and CO2). It can be used in stand-alone applications, integrated with Carel controllers or with third party devices. It envisions connection with the CAREL controller via the analogue, digital output or via RS485 Modbus® serial connection. When a leak above a certain concentration is detected, the sensor informs the controller of the alarm and locally activates an audible and visual signal and a relay (SPDT) at the same time. It offers the advantage of intervening immediately on gas leaks, thus preventing unit standstill and guaranteeing the safety of persons in the vicinity.Its installation ensures compliance with the European F-GAS and EN378 and ASHRAE 15 standards.

Technical specificationsPower supply: 12 to 24 Vac/Vdc ±20% 50/60 HzOperating conditions: • semicond. ver. -20T50°C;• infrared ver. -40T50°C 80% R.H. non

condensing.Protection rating: • semicond. ver. IP41;• infrared ver. IP66.Assembly: wall-mountedNumber of I/Os: • analogue outputs: configurable 0 to 5 V,

1 to 5 V, 0 to 10 V, 2 to 10 V, 4 to 20 mA;• digital outputs: 1 amp at 24 Vac/Vdc.Serial Ports: RS485 Modbus®Connections: disconnectable clamps, 0.5 mm2 cable cross-section

DPWQ*: for installation in the roomDPPQ*: for installation in the duct

These analyse the quality of the air and are ideal for air ventilation and handing systems in domestic and commercial areas.

Main functions:• measurement of air quality;• quantitative analysis of contamination

by parts of polluting gases;• setting of a sensitivity threshold

depending on that envisioned;• for the ventilation of rooms only when

necessary, contributing to a large energy saving.

Technical specificationsPower supply: 24 Vac/dc ±10%, 50/60 HzOperating conditions: 0T50 °C, 10/90% R.H. non cond.Protection rating: • IP55 (container); • IP67 (sensor)Assembly: • DPWQ: wall-mounted;• DPDQ: ductNumber of I/Os: • analogue outputs: 0 to 10 V, 4 to 20 mADimensions: • DPWQ*: 95x97x30 mm; 79x81x26 mm;• DPDQ*: 108x70x262.5 mm;

64x72x228.4 mm.Connections: screw terminal board for cables up to 1.5 mm2

air quality sensors gas leak sensors


NTC*HP*, NTC*WP*, NTC*WH*, NTC*WF*,NTC*HF and NTC*HT, NTCINF*, NTC*PS*

CAREL offers a range of sensors with different features for the various controllers, suitable for different applications mainly in the HVAC/R market sector. The accuracy obtained thanks to the technical solutions used in developing the sensor, the reliability as a result of the tests to which they are subjected, mean that CAREL NTC probes are reliable transducers for measuring temperature at a low cost.

Probes for socket assembly are available in strips for installation on piping for pass-through with or without pre-heater, to measure the core temperature of the product, and a sensor for estimating product temperature.

Technical specificationsOperating conditions: -50T105 °CProtection rating: IP67 and IP68Assembly: depending on the modelDimensions: depending on the model

TSN* and TSC*= NTC versionTST* and TSM*= Pt1000 versionTSOPZ= accessories (connectors, fittings, housing…)

CAREL offers a range of TS* series immersion probes in NTC and Pt1000 models, suitable exclusively for hydronic applications.Quick installation, fast response of the sensor an excellent price/performance ratio are features on which this product range is based.Connectors are available with cables, fittings and the socket as accessories.

Technical specificationsOperating conditions: -40T90 °C, -40T120 °CAssembly: on pipingDimensions: • TSN* and TSC*: 1/8” GAS x 5 mm• TST* and TSM: M14 x23 mm with 2 m

cable

PTC*

The PTC temperature probes represent a possible solution for both cooling and heating applications, used to measure temperature within the operating range, -50T100 °C and 0T150 °C.

PT100*

The PT100 probes represent the ideal solution for all applications in which it is necessary to measure temperatures within the range from -50 to 400 °C (depending on the models).

PT1*HP*, PT1*WP*, PT1*WF*, PT1*HF*, PT1*HT*; PT1*PS; TSQ*

The Pt1000 probes (PT1* and TSQ*) are suitable for all those applications in which it is necessary to measure temperatures in a range from -50 to 250 °C (TSQ*) and from -50 to 105 °C (PT1*), maintaining accuracy also over long distances..

Probes for socket assembly are available in strips for installation on piping for pass-through with or without pre-heater, to measure the core temperature of the product, and a sensor for estimating product temperature.

Technical specificationsOperating conditions: -50T105 °C, -50T250 °C, -50T350 °CProtection rating: IP65 and IP67Dimensions: depending on the model

Temperature probes with NTC thermistor

Immersion probes Temperature probes with PTC, Pt100, Pt1000 sensor

passive temperature sensors

95

SPKT*C*, SPK1*, SPK2*, SPK3*, SPKT*D*

The pressure transducers supply an analogue current signal (4 to 20 mA).They are used particularly in refrigeration and air conditioning to measure pressure in cooling circuits, but their high performance allows their use in almost all other applications. Compatible with all types of refrigerant.They are available with male and female connection for the C series and only female for the D series.

Technical specificationsPower supply: 8 to 28 Vdc ±20%Operating conditions: • -25T80 °C (male);• -40T135 °C (female).Protection rating: IP65 (IP67 with built-in connector)Number of I/Os: • analogue outputs: 4 to 20 mADimensions: depending on the modelConnections: Packard

SPKT*S*

The Carel 5 V ratiometric pressure transducers (Sealing) have been developed to be used in commercial refrigeration and air conditioning applications. They are completely hermetic and can be installed directly in contact with the piping, in conditions with the refrigerant fluid lower than the dew point ( it is not necessary to use the capillary positioned between piping and sensor).Available with female connection only

Technical specificationsPower supply: 5 VdcOperating conditions: -40T125 °CProtection rating: IP67Number of I/Os: • analogue outputs: 0.5 to 4.5 VDimensions: Ø21x51 mmConnections: Packard

SPKT*R*

These pressure transducers supplya 0 to 5 V ratiometric signal (automotive standard).They can be used in air conditioning and refrigeration systems, with exception to those containing ammonia.Available with female connection only.

Technical specificationsPower supply: 4.5 to 5.5 VdcOperating conditions: -40T135 °CProtection rating: IP65Number of I/Os: • analogue outputs: 0.5 to 4.5 VDimensions: 20x51.6 mmConnections: Packard

Pressure transducers 4 to 20 mA series C and D

Ratiometric pressure transducers 0 to 5 V series S

Ratiometric pressure transducers 0 to 5 V series R

pressure sensors


DCFL000100

DCPD0*0*00

DCTF000320

Airflow switch

Flow switch for controlling air or non-aggressive gas flow inside the distribution ducts for air conditioning and air handling units. It signals the lack of or excessive decrease in flow rate in the duct, thus activating the switch.

various devices

Differential pressure transducers

Differential pressure switch

Anti-freeze thermostat

SPKD*

The differential pressure transducers use a ceramic sensor that supplies a voltage or current signal that is calibrated and compensated by temperature. They are particularly suitable for measuring low pressure values in air conditioning systems, laboratories and clean rooms (non-corrosive air and gas) The main features are:• compact construction;• easy and simple installation; • model can be configured for 4 different

pressure ranges.

Technical specificationsPower supply: 15 to 36 VdcOperating conditions: 0T50 °CProtection rating: IP65Assembly: panelNumber of I/Os: • analogue outputs: 4 to 20 mADimensions: 70x108x73.5 mmConnections: screw terminal board for cables up to 1.5 mm2

Device used to control the differential pressure of the air for filters, fans, air ducts, air-conditioning and ventilation units.The pressure switch is particularly suitable for control and safety in air-conditioning systems for indicating fan shutdown and clogging of the filters. It is applied in environments with non-aggressive and non-flammable air and gases, also in the version with assembly kit.

This manages heat exchanger (evaporation coils) and electric heater protection for air conditioning and refrigeration systems. It can be used in all applications where it is necessary to control the temperature in a certain point of the system in order to prevent it dropping below a pre-established safety value. Moreover, the thermostat offers self-protection if the sensitive element should breakdown.

pressure sensors

SPKP*

The combined pressure and temperature transducer has been developed for applications in the refrigeration and air conditioning sectors. The sensor-pressure transducer is 0 to 5V ratiometric, while the temperature sensor is NTC.It offers the advantage of having a single component with a quicker and more accurate measurement. Typical use is in combination with a driver for electronic expansion valves in refrigeration and air conditioning applications.

Technical specificationsPower supply: 4.5 to 5.5 VOperating conditions: -40T120 °CProtection rating: IP67Number of I/Os: • analogue outputs: 0.5 to 4.5 V and NTC

10K at 25°C (non STD)Dimensions: Ø= 23.80 x 65 mmConnections: 4-way AMP Micro-Quadlok System connector

Combined pressure-temperature transducer

97

FLOE*

SFF*

Flood detector

Smoke and fire detector

The smoke and heat detectors are electronic devices that can quickly detect dangerous and sudden temperature changes or the increase in fumes. Their peculiarity lies in the self-calibration, i.e. the possibility to maintain the guarantee of activation over time, adapting perfectly to the different environmental conditions, without losing sensitivity.

The flood sensor device can detect the presence of water in an environment. It is usually used for the protection against the flooding of datacentres, offices, laboratories, special rooms. It is made up of a detector (normally positioned on the electric control board) and a sensor (positioned on the point to be controlled).When the water comes into contact with the sensor, the detector immediately signals an alamr, switching over relay status.

various devices

Models temper. range

temper. range output

Active probes for rooms, power supply 9 to 30 Vdc/12 to 24 Vac

DPWT010000 -10T60 °C selectable 0 to 1 V/-0.5 to 1 Vdc/4 to 20 mADPWT011000 -10T60 °C NTC 10 K at 25 °CDPWC111000 -10T60 °C 10…90% R.H. • NTC 10 K at 25 °C (temperature)

• selectable 0 to 1 V/-0.5 to 1 Vdc/4 to 20 mA (humidity)

DPWC110000 -10T60 °C 10…90% R.H. selectable 0 to 1 V/-0.5 to 1 Vdc/4 to 20 mADPWC115000 -10T60 °C 10…90% R.H. • NTC 10 K at 25 °C (temperature)

• 0 to 10 Vdc (humidity)DPWC112000 -10T60 °C 10…90% R.H. 0 to 10 VdcDPWC114000 -10T60 °C 10…90% R.H. opto-isolated RS485 serialDPWT014000 -10T60 °C opto-isolated RS485 serial

Active probes for industrial environments, power supply 9 to 30 Vdc/12 to 24 Vac

DPPT010000 -20T70 °C selectable 0 to 1 V/-0.5 to 1 Vdc/4 to 20 mADPPT011000 -20T70 °C NTC 10 K at 25 °CDPPC111000 -10T60 °C 10…90% R.H. • NTC 10 K at 25 °C (temperature)


DPPC110000 -10T60 °C 10…90% R.H. selectable 0 to 1 V/-0.5 to 1 Vdc/4 to 20 mADPPC210000 -20T70 °C 0…100% R.H. selectable 0 to 1 V/-0.5 to 1 Vdc/4 to 20 mADPPC112000 -10T60 °C 10…90% R.H. 0 to 10 VdcDPPC212000 -20T70 °C 0…100% R.H. 0 to 10 VdcDPPT014000 -10T60 °C 10…90% R.H. opto-isolated RS485 serialDPPC114000 -10T60 °C 10…90% R.H. opto-isolated RS485 serialDPPC214000 -20T70 °C 0…100% R.H. opto-isolated RS485 serial

Active probes for ducts, power supply 9 to 30 Vdc/12 to 24 Vac

DPDT010000 -20T70 °C selectable 0 to 1 V/-0.5 to 1 Vdc/4 to 20 mADPDT011000 -20T70 °C NTC 10 K at 25 °CDPDC111000 -10T60 °C 10…90% R.H. • NTC 10 K at 25 °C (temperature)


DPDC110000 -10T60 °C 10…90% R.H. selectable 0 to 1 V/-0.5 to 1 Vdc/4 to 20 mADPDC210000 -20T70 °C 0…100% R.H. selectable 0 to 1 V/-0.5 to 1 Vdc/4 to 20 mADPDC112000 -10T60 °C 10…90% R.H. 0 to 10 VdcDPDC212000 -20T70 °C 0…100% R.H. 0 to 10 VdcDPDT014000 -20T70 °C opto-isolated RS485 serialDPDC114000 -10T60 °C 10…90% R.H. opto-isolated RS485 serialDPDC214000 -20T70 °C 0…100% R.H. opto-isolated RS485 serial

Container protection rating: IP55 for DPD, DPP for duct and technical environment) IP30 for DPW (wall-mounted)Sensitive element protection rating IP30 for DPW IP40 for DPD IP54 for DPP Time constant, temperature in still air 300 s in ventilated air (3 m/s) 60 sTime constant, humidity in still air 60 s in ventilated air (3 m/s) 20 s

Models temperature range output

Active probes for immersion and power supply environment 9 to 30 Vdc/12 to 24 Vac

ASIT030000 -30T90 °C selectable -0.5 to 1 Vdc/4 to 20 mA

Active probes for universal power supply use 9 to 30 Vdc/12 to 24 Vac

ASET030000 -30T90 °C selectable -0.5 to 1 Vdc/4 to 20 mA



Active temperature and humidity probes


Models range accuracy constants (time) in fluid IP

NTC*

NTCI*HP** -50T105 °C 25 °C: ±1% 25 s IP67

NTCI*WF** -50T105 °C 25 °C: ±1% 10 s IP67

NTCI*WP** -50T105 °C 25 °C: ±1% 30 s IP68 limited

NT*WG** -50T105 °C 25 °C: ±1% 20 s IP67

NT*HT** 0T150 °C ±0.5 °C, -10T50 °C - 25 °C: ±1.0 °C; -50T85 °C±1.6 °C; +85T120 °C - ±2.1 °C; +120T150 °C

30 s IP55

NT*HF** -50T90 °C ±0.5…25 °C; ±1.0 °C from -50T90 °C 50 s IP55

NT*WH* -50T105 °C 25 °C; ±1% 30 s IP68 permanent

NTC*PS* -50T105 °C 25 °C: ±1% 50 m IP67

NTCINF -50T110 °C 25 °C: ±1% 45 s IP67

TSN* -40T120 °C 25 °C: ±1% 30 s IP68

TSC* -40T90 °C 25 °C: ±1% 45 s IP68

PT100*

PT100000A1 -50T250 °C IEC 751 class B 20 s IP65

PT100000A2 -50T400 °C IEC 751 class B 20 s IP65

PT1000

PT1*HP* -50T105 °C IEC 751 class B 10 s IP67PT1*WF* -50T105 °C IEC 751 class B 15 s IP67PT1*WP* -50T105 °C IEC 751 class B 25 s IP68 limitedPT1*HF* -50T105 °C IEC 751 class B 15 s IP67PT1*HT* -50T250 °C IEC 751 class B 20 s IP67PT1*PS* -50T105 °C IEC751 class B 50 m IP67TSQ15MAB00 -50T250 °C IEC 751 class B 10 s IP65TST* -40T120 °C IEC 751 class B 10 s IP68TSM* -40T90 °C IEC 751 class B 10 s IP68

PTCPTC0*0000 0T150 °C ±2 °C; 0T50 °C - ±3 °C; -50T90 °C - ±4 °C; 90T120 °C 15 s IP65PTC0*W* -50T100 °C ±2 °C; 0T50 °C - ±3 °C; -50T90 °C - ±4 °C; 90T120 °C 15 s IP67PTC03000*1 -50T120 °C ±2 °C; 0T50 °C - ±3 °C; -50T90 °C - ±4 °C; 90T120 °C 15 s IP67

Passive temperature probes

Models type output

For rooms, 24 Vac/15 to 36 Vdc

DPWQ306000 V.O.C. 0 to 10 Vdc or 4 to 20 mADPWQ402000 CO2 0 to 10 VdcDPWQ502000 V.O.C. and CO2 0 to 10 Vdc

For ducts, 24 Vac/15 to 36 Vdc

DPDQ306000 V.O.C. 0 to 10 Vdc or 4 to 20 mADPDQ402000 CO2 0 to 10 VdcDPDQ502000 V.O.C. and CO2 0 to 10 Vdc

Air quality probes

99

Models power supply: input current

diff erential pressure

range

diff erential pressure accuracy full scale

output signal fi ltered signal IP

SPKD00C5N0 15 to 30 Vdc ≥20 mA -50 to 50 Pa-100 to 100 Pa0 to 50 Pa0 to 100 Pa

±3% 4 to 20 mA selectable 1 or 10 s IP65

SPKTD00U5N0 15 to 30 Vdc ≥20 mA 0 to 1000 Pa0 to 2000 Pa0 to 3000 Pa0 to 5000 Pa

±3% 4 to 20 mA selectable 1 or 10 s IP65

Differential air pressure transducers

Models power supply: operating temperature range accuracy output

signalconstants

(time) IP

SPKT00-R0: 0 to 5 V ratiometric - female series R

*53* 4.5 to 5.5 Vdc -40T135 °C 4.2 relative bar ±1,2% 0.5 to 4.5 V 10 ms IP65 1




*B6* 4.5 to 5.5 Vdc -40T135 °C 45.0 relative bar ±1,2% 0.5 to 4.5 V 10 ms IP65 1

*F3* 0.5 to 5.5 Vdc -40T135 °C 20 relative bar ±1,2% 0.5 to 4.5 V 10 ms IP65 1

*E3* 0.5 to 5.5 Vdc -40T135 °C 12.8 relative bar ±1,2% 0.5 to 4.5 V 10 ms IP65 1

SPK*: 4 to 20 mA - male series C

*1000000 8 to 28 Vdc -25T80 °C -0.5 to 7 bar ±1% fs 4 to 20 mA - IP67*240000 8 to 28 Vdc -25T80 °C -1 to 24 bar ±1% fs 4 to 20 mA - IP67*2500000 8 to 28 Vdc -25T80 °C 0 to 25 bar ±1% fs 4 to 20 mA - IP67*3000000 8 to 28 Vdc -25T80 °C 0 to 30 bar ±1% fs 4 to 20 mA - IP67

SPK*C*: 4 to 20 mA - female series C

*T0021C0 8 to 28 Vdc -40T135 °C -0.5 to 7 bar ±1% fs; 0T50 °C 4 to 20 mA <10 ms IP65 1

*T0011C0 8 to 28 Vdc -40T135 °C 0 to 10 bar ±1% fs; 0T50 °C 4 to 20 mA <10 ms IP65 1

*T0031C0 8 to 28 Vdc -40T135 °C 0 to 30 bar ±1% fs; 0T50 °C 4 to 20 mA <10 ms IP65 1

*T0041C0 8 to 28 Vdc -40T135 °C 0 to 18.2 bar ±1% fs; 0T50 °C 4 to 20 mA <10 ms IP65 1

*T00B1C0 8 to 28 Vdc -40T135 °C 0 to 44.8 bar ±1% fs; 0T50 °C 4 to 20 mA <10 ms IP65 1

*T00G1C0 8 to 28 Vdc -40T135 °C 0 to 60 bar ±1% fs; 0T50 °C 4 to 20 mA <10 ms IP65 1

*T00D8C0 8 to 28 Vdc -40T100 °C 0 to 150 bar ±1% fs; 0T50 °C 4 to 20 mA <10 ms IP65 1

SPK*: 4 to 20 mA - female series D*T0021D0 8 to 28 Vdc -40T135 °C -0.5 to 7 bar ±1% fs; 0T40 °C 4 to 20 mA <10 ms IP65*T0011D0 8 to 28 Vdc -40T135 °C 0 to 10 bar ±1% fs; 0T40 °C 4 to 20 mA <10 ms IP65*T0041D0 8 to 28 Vdc -40T135 °C 0 to 18.2 bar ±1% fs; 0T40 °C 4 to 20 mA <10 ms IP65*T0031D0 8 to 28 Vdc -40T135 °C 0 to 30 bar ±1% fs; 0T40 °C 4 to 20 mA <10 ms IP65*T00B1D0 8 to 28 Vdc -40T135 °C 0 to 44.8 bar ±1% fs; 0T40 °C 4 to 20 mA <10 ms IP65

SPK*: 0 to 5 V - female series S*T0051S0 0.5 to 4.5 Vdc -40T125 °C -1 to 4.2 bar ±1% fs; 0T50 °C 0.5 to 4.5 V <10 ms IP67*T0011S0 0.5 to 4.5 Vdc -40T125 °C -1 to 9.3 bar ±1% fs; 0T50 °C 0.5 to 4.5 V <10 ms IP67*T00E1S0 0.5 to 4.5 Vdc -40T125 °C -1 to 12.8 bar ±1% fs; 0T50 °C 0.5 to 4.5 V <10 ms IP67*T0041S0 0.5 to 4.5 Vdc -40T125 °C 0 to 17.3 bar ±1% fs; 0T50 °C 0.5 to 4.5 V <10 ms IP67*T00F1S0 0.5 to 4.5 Vdc -40T125 °C 0 to 20.7 bar ±1% fs; 0T50 °C 0.5 to 4.5 V <10 ms IP67*T0031S0 0.5 to 4.5 Vdc -40T125 °C 0 to 34.5 bar ±1% fs; 0T50 °C 0.5 to 4.5 V <10 ms IP67*T00B1S0 0.5 to 4.5 Vdc -40T125 °C 0 to 45 bar ±1% fs; 0T50 °C 0.5 to 4.5 V <10 ms IP67

1 with built-in IP67 connector

Pressure transducers


Operating conditions sensor range accuracy maximum

currentoutput signal contacts IP

DCPD0*0100: pressure switch for duct

-25T85 °C max 50 mbar

silicone membrane 0.5 to 5 mbar 0.2 ± 15% mbar 1.5 (A) 25 Vac0.1 A 24 Vac

NO...NC voltage-free contact

AgCdO contacts watertight switch

IP54

DCPD0*1100: pressure switch for duct

-20T85 °C max 50 mbar

silicone membrane 0.2 to 2 mbar 0.2 ± 15% mbar 1.5 (A) 25 Vac0.1 A 24 Vac


AgCdO contacts watertight switch

IP54

DCFL000100: flow switches

-40T85 °C silicone membrane 2.5 to 9.2 m/s (start)1 to 8 m/s (stop)

15 (8) A24/250 Vac


watertight switch IP65

*: “1” with assembly kit

Pressure switches and flow switches

+800003001 - 2.2 - 01.09.2012

CAREL INDUSTRIES reserves the right to modify the features of its products without prior notice.

Solutions for air humidi˜cation and evaporative cooling · 2019. 6. 12. · CAREL solutions for air humidification are simple use and installation, and reliability to ensure continuous

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